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Dot Point Learning Systems

Science Essentials for mobiles and tablets.

DPLS Science Essentials 3.2.0

The Science Essentials app for mobiles and tablets.

Over 400 easy to use calculators.

Over 280 equation calculators that can solve for any variable in the equation.

An extensive database of formulas for science, maths and statistics.

An extensive science data reference system.

An extensive database of constant values.

An extensive database of symbols.

A highly functional scientific calculator.

A set of statistical calculators.

A chemical equation balancer and a list of over 100 balanced equations.

A set of vector calculators.

A set of colour coded periodic tables with element property data.

An extensive science glossary system.

A databases for over 3000 organic and inorganic compounds.

An extensive measurement converter system.

An extensive set of shape calculators.

An event timer, event counter, world times and yearly calendar.

Complex number and matrix calculators.

Calculators for molecular mass and concentration.

A search system to quickly find calculators and reference data.

Click for a video of the app Click to read the features 

Purchasing and download

Science Essentials can be installed on a tablet or mobile running Android version 5.0 or higher. Adware and spyware free, and no connection to the internet is necessary.

Price: $2.50 AU (approx 1.55 EUR, $1.71 US)

For safe and secure purchasing, Science Essentials can be downloaded from the Google Play website.

Google Play

To download the app onto a tablet or mobile:

   1. Open Google Play on your tablet or mobile.

   2. Search for "Science Essentials + Dot Point Learning Systems".

Features - select to view

The Science Essentials app contains an extensive set of calculators, converters, utilities, data reference systems and glossaries.

A topics system is available to quickly understand the principles of chemistry and physics.

Science Essentials can be installed on a tablet or mobile running the Android operating system, version 5.0 or higher, and no connection to the Internet is necessary.

The system is fast and designed for ease of use.

The app contains over 400 calculators, including over 280 equation calculators.

Most equation calculators can solve for any variable in the equation. A measurement converter is incorporated for most variables in the equation and a notes system gives an explanation of the equation.

  • General calculators and utilities
  • Scientific calculator: Contains extensive functionality and also allows the user to quickly convert measurements, find constant values and find the molecular mass of compounds.
  • Expression line calculator: Allows a line expression to be evaluated with over 20 available functions.
  • Proportrion & percent calculators: Solves for percent, change to units, initial units, final units and % change in units.
  • Event counter: Keeps a record of counts.
  • Event timer: Allows the user to record the time of events.
  • Yearly calendar: Provides a 12 month calendar for any nominated year.
  • World times: Provides current device time as well as time and offset value for 5 other nominated locations in the world.
  • Slope calculator: Calculates lengths, slope ratio, slope angle, slope in % and area under gradient.
  • Motion calculators
  • Displacement: Solves for either displacement, velocity or time taken.
  • Velocity: Solves for either final velocity, initial velocity, acceleration or time.
  • Acceleration : Solves for either final velocity, initial velocity, final time or initial time.
  • UCM - rotational period : Solves for either period, radius or tangential velocity.
  • UCM - linear or tangential velocity : Solves for either velocity, radius or period.
  • UCM - centripetal acceleration : Solves for either centripetal acceleration, linear velocity or radius.
  • UCM - centripetal acceleration with angular motion : Solves for either centripetal acceleration, angular velocity or radius.
  • Angular motion - arc length : Solves for either displacement, arc length or radius.
  • Angular motion - angular displacement : Solves for either angular velocity, angular displacement or time.
  • Angular motion - angular velocity: Solves for either final or initial angular velocity or time.
  • Angular motion - angular velocity and period: Solves for either angular velocity or frequency of rotation.
  • Angular motion - angular acceleration: Solves for either angular acceleration, final acceleration, initial acceleration or time.
  • Linear or translational acceleration: Solves for either angular acceleration, tangential acceleration or radius.
  • Angular motion - tangential velocity: Solves for either linear velocity, angular velocity or radius.
  • Free falling object - velocity: Solves for either velocity, acceleration due to gravity or time.
  • Free falling object - vertical distance travelled with time: Solves for either distance, acceleration due to gravity or time.
  • Projectile motion - maximum vertical height: Solves for either vertical height or initial velocity angle.
  • Projectile motion - vertical distance travelled at time t: Solves for either displacement, initial velocity, time, acceleration or time.
  • Projectile motion - maximum horizontal range: Solves for either horizontal range, initial velocity, acceleration due to gravity or angle thrown.
  • Projectile motion - total time of flight: Solves for either time, initial velocity, angle or acceleration.
  • Projectile motion - vertical velocity at time t: Solves for either velocities, angle, acceleration or time.
  • SHM - displacement: Solves for either displacement, amplitude, frequency or time.
  • SHM - velocity: Solves for either velocity, angular velocity, amplitude, angular velocity or time.
  • SHM - maximum velocity at equilibrium: Solves for either velocity, frequency or amplitude.
  • SHM - acceleration: Solves for either centripetal acceleration, radius period, period of rotation.
  • SHM - acceleration: Solves for either acceleration, frequency or displacement.
  • SHM - period and frequency: Solves for either angular frequency or frequency of rotation.
  • SHM - mass on a spring period: Solves for either period, mass or spring constant.
  • SHM - simple pendulum period : Solves for either period, pendulum length or acceleration.
  • SHM - physical pendulum period: Solves for either period, moment of inertia, nass, acceleration or distance to pivot point.
  • Moment of inertia - straight line: Solves for either moment of inertia, fraction, mass or radius.
  • Moment of inertia- solid cylinder, solid sphere, hollow sphere: Solves for.
  • Satellite motion - Kepler's third law: Solves for either period of orbit, radius of orbit or mass.
  • Satellite motion - escape velocity: Solves for either escape velocity, mass or radius.
  • Momentum: Solves for either momentum, mass or velocity.
  • Momentum after a collision: Solves for either mass, initial velocity or final velocity.
  • Angular momentum: Solves for either angular momentum, moment of inertia or angular velocity.
  • Impulse when momentum changes: Solves for either impulse, initial velocity or final velocity.
  • Force and energy calculators
  • Force - mass and acceleration: Solves for either force, mass or acceleration.
  • Weight: Solves for either weight, mass and acceleration due to gravity.
  • Hooke's law: Solves for either force, spring constant or displacement.
  • Resolving a force and resultant force: Solves for either x, y and r forces and angle.
  • Resultant force by addition: Solves for either x,y and r forces.
  • Normal force: Solves for either mass, acceleration due to gravity or angle.
  • Force of parallel: Solves for either mass, acceleration due to gravity, angle to x-axis.
  • Force of friction - kinetic friction: Solves for either force, surface friction coefficient or normal force.
  • Centripetal force: Solves for either force, mass, tangential velocity or radius.
  • Centripetal force - angular motion: Solves for either force, mass, angular velocity or radius.
  • Centripetal acceleration: Solves for either centripetal acceleration, linear velocity or radius.
  • Centripetal acceleration - angular motion: Solves for either centripetal acceleration, angular velocity or radius.
  • Universal gravitation: Solves for either force of gravity, mass or distance.
  • Gravitational acceleration: Solves for either acceleration due to gravity, mass or distance.
  • Gravitational potential energy: Solves for either potential energy, mass or distance.
  • Gravitational force: Solves for either force or mass.
  • Force of buoyancy - Archimedes' principle: Solves for either force or mass displaced.
  • Force of buoyancy with mass of fluid displaced: Solves for either force of buoyancy or mass displaced.
  • Force of buoyancy - pressure and area: Solves for either pressure or area.
  • Potential energy due to gravity: Solves for either gravitational potential energy, mass or height of object.
  • Potential energy of a spring : Solves for either potential energy, spring constant or spring extension.
  • Kinetic energy: Solves for either kinetic energy, mass or velocity.
  • Kinetic energy - angular motion : Solves for either moment of inertia or angular velocity.
  • Pressure: Solves for either pressure, force or area.
  • Pascal's law: Solves for either pressure, density and height of fluid.
  • Pressure in a liquid: Solves for either pressure, atmospheric pressure, density and height.
  • Bernoulli's equation: Solves for either pressure, density, atmospheric pressure or velocity.
  • Force and area - piston application: Solves for either areas or forces.
  • Work with force and distance object displaced: Solves for either work, force or distance.
  • Work with force at an angle: Solves for either work, displacement or angle.
  • Work - angular motion: Solves for either work, torque or angular displacement.
  • Torque (moment of force): Solves for either torque, force or length of moment arm.
  • Torque with angular acceleration: Solves for either torque, moment of inertia or angular acceleration.
  • Power with work done in time: Solves for either power, work or time.
  • Power with force and velocity: Solves for either power, force or velocity.
  • Power when force is at an angle: Solves for either power, force on an object, velocity or angle.
  • Power to lift up an object: Solves for either power, mass, acceleration, height or time.
  • Power with angular motion: Solves for either power, torque or angular velocity.
  • Efficiency by work: Solves for either efficiency, work outpur or work input.
  • Efficiency by energy: Solves for either efficiency, energy outpur or energy input.
  • Thermal efficiency: Solves for either thermal efficiency, energy input or energy lost.
  • Effort and load force: Solves for either effort force, load force or distances.
  • Volumetric flow rate: Solves for either flow rate, volume or time taken.
  • Mass flow rate: Solves for either flow rate, mass or time taken.
  • Density: Solves for either density, mass or volume.
  • Kinematic viscosity: Solves for either mass or volume.
  • Reynolds number: Solves for either reynold's number, fluid density, fluid viscosity, length or dynamic viscosity.
  • Stress: Solves for either stress, force applied or cross section area.
  • Strain: Solves for either strain, change in length or origional length.
  • Young's modulus: Solves for either Young's modulus, stress or strain.
  • Bulk modulus: Solves for either Bulk modulus, pressure, change in volume or origional volume.
  • Surface tension: Solves for either surface tension, force or length of side.
  • Heat capacity: Solves for either heat capacity, heat transferred or change in temperature.
  • Specific heat capacity : Solves for either specific heat capacity, heat capacity or mass.
  • Energy to heat a substance: Solves for either energy, mass, spacific heat or temperature.
  • Latent heat: Solves for either heat energy, mass or latent heat.
  • Boiling point elevation: Solves for either change in boiling point, boiling point elevation constant, molality or van 't Hoff factor.
  • Freezing point depression: Solves for either change in freezing point, freezing point depression constant, molality of solution or van 't Hoff factor.
  • Change in internal energy: Solves for either change in internal energy, heat added or work done.
  • Enthalpy: Solves for either enthalpy, internal energy, pressure or volume.
  • Change in Gibbs free energy: Solves for either Gibbs free energy, enthalpy, absolute temperature or entropy.
  • Entropy with heat & temperature: Solves for either entropy, heat or temperature.
  • Entropy with system multiplicity: Solves for either entropy, Boltzmann constant or multiplicity.
  • Nernst equation: Solves for either cell potential, gas temperature, number of mol, faraday constant, reaction quotient.
  • Wave & light calculators
  • General wave equation: Solves for either velocity, wavelength or frequency.
  • Wave period: Solves for either period or frequency.
  • Angular frequency: Solves for either angular frequency or frequency.
  • Wave intensity: Solves for either intensity, power delivered or area.
  • Sound wave intensity with distance: Solves for either final intensity, inital intensity, initial distance or final distance.
  • Sound intensity in decibles: Solves for either sound intensity level or sound intensity.
  • Sound pressure level: Solves for either sound pressure in dB or pressure.
  • Doppler effect of sound waves: Solves for either observed frequency.
  • Doppler effect of electromagnetic waves: Solves for either observed frequency.
  • Refractive index: Solves for either refractive index or velocity of light in the medium.
  • Snell's law: Solves for either refractive index, angle of incidence or angle of refraction.
  • Critical angle: Solves for either critical angle or refractive index.
  • Apparent depth: Solves for either apparent depth, true depth or refractive index.
  • Luminous flux: Solves for either luminous flux, luminous intensity or solid angle.
  • Solid angle: Solves for either solid angle, sphere surface arar or sphere radius.
  • Illumination: Solves for either illumination, luminous flux or area.
  • Mirror and lens equation: Solves for either focal length, object distance or image distance.
  • Linear magnification: Solves for either linear magnification, image height and distance or object height and distance.
  • Mirror and lens equation: Solves for either object distance, image distance or focal length.
  • Magnification: Solves for either magnification, height and distance of object or height and distance of image.
  • Photon energy: Solves for either photon energy, frequency or wavelength.
  • Photon momentum: Solves for either momentum or wavelength.
  • Rydberg formula: Solves for either photon wavelength, atomic number, initial energy or final energy.
  • Total energy of a mass: Solves for either energy or mass.
  • Relativistic mass-energy: Solves for either energy or mass.
  • Relativistic kinetic energy: Solves for either kinetic energy or mass.
  • Relativistic time dilation: Solves for either dilated time or rest time.
  • Relativistic length contraction: Solves for either contracted length or rest length.
  • Relativistic mass: Solves for either relative mass or rest mass.
  • Addition theorem for velocities: Solves for either composite velocity, velocity object 1 or velocity object 2.
  • Electrical calculators.
  • Voltage (Ohm's law): Solves for either voltage, current or resistance.
  • Electric current: Solves for either current, charge or time.
  • Electric current: Solves for either current, voltage or resistance.
  • Resistance by Ohm's law: Solves for either resistance, voltage or current.
  • Resistance in series: Solves for total resistance.
  • Resistance in parallel: Solves for total resistance.
  • Wheatstone bridge: Solves for potential difference across bridge, potential difference supplied in or resistance of conductor.
  • Material resistivity: Solves for either conductor resistance, resistivity, length of resistor or cross-section area of resistor.
  • Change in material resistance with temperature: Solves for either change in resistance, coefficient of resistance, resistance or change in temperature.
  • Electrical work with charge: Solves for either work, potential difference or charge.
  • Electrical work with resistance: Solves for either work, current, resistance or time.
  • Joule's law of heating: Solves for either work done, current, resistance or time.
  • Electric power with voltage: Solves for either electric power, voltage or current.
  • Electric power with resistance: Solves for either electric power, current or resistance.
  • Transformer - voltage: Solves for either voltage or turns of wire.
  • Transformer - current: Solves for either current or turns of wire.
  • Capacitance: Solves for either capacitance, charge or voltage applied.
  • Charge per unit area: Solves for either charge per unit area, charge or area.
  • Voltage difference between capacitor plates: Solves for either electric field, potential difference or distance between plates.
  • Capacitor in series: Solves for final capacitance.
  • Capacitor in parallel: Solves for final capacitance.
  • Capacitance - parallel plate: Solves for either capacitance, dielectric constant, plate area or distance between plates.
  • Capacitor current: Solves for either current, change in charge, charging time.
  • Time constant for charging / discharging: Solves for either time constant, resistance or capacitance.
  • Capacitor charging with charge: Solves for either charge, time of charging, resistance or capacitance.
  • Capacitor charging with voltage: Solves for either voltage, time of charging, resistance or capacitance.
  • Capacitor potential energy (work done): Solves for either potential energy, charge or potential difference.
  • Force on a charged object: Solves for either force on a charged object, electric field, charge on the object.
  • Potential difference between field points: Solves for either potential difference, work, charge.
  • Electric field strength between charged plates: Solves for either electric field, potential difference or distance between plates.
  • Electric field strength to a point: Solves for either force, electric field or charge.
  • Coulomb's law: Solves for either force, charge or distance between charged objects.
  • Potential energy between charged points: Solves for either potential energy, charge or distance between charged objects.
  • Potential energy between charged points: Solves for either potential energy, charge or distance between charged objects.
  • Inductance in series: Solves for total inductance.
  • Inductance in parallel: Solves for total inductance.
  • Self-induced e.m.f: Solves for either emf, self-inductance, change in current, rate of time.
  • Induced e.m.f - solenoid coil of N loops (Faraday's law): Solves for either induced emf, number of turns, change in magnetic flux or time,.
  • Electric flux: Solves for either electrical flux, electric field, area or angle.
  • Magnetic flux: Solves for either magnetic flux, magnetic field, area or angle.
  • Magnetic flux density from a straight line current : Solves for either magnetic flux density, material permeability, current or distance from current.
  • Magnetic field at solenoid center: Solves for material permeability, number of turns, current or length of solenoid.
  • Magnetic force on a moving charged particle: Solves for either magnetic force, charge, velocity, magnetic field or angle.
  • Magnetic force on a current flowing through a wire: Solves for either magnetic force, magnetic field, current, length or angle.
  • Chemistry calculators.
  • Density: Solves for either density, mass or volume.
  • Specific weight: Solves for either specific weight, density or acceleration due to gravity.
  • Specific gravity of a fluid: Solves for either specific gravity, density of sample or water.
  • Equilibrium constant for concentration: Solves for either mol of reactants or product, concentration of reactant or product.
  • Equilibrium constant for pressure: Solves for either mol of reactants or product, partial pressure of reactant or product.
  • Solubity product: Solves for either mol of reactants or concentration of products.
  • pH: Solves for either pH or concentration of H+.
  • pOH: Solves for either pOH or concentration of OH-.
  • Acid dissociation: Solves for concentration.
  • Base dissociation: Solves for conventration.
  • Molar mass: Solves for either molar mass, mass or amount of substance.
  • Molarity: Solves for either molarity, amount of substance or volume.
  • Molality: Solves for either molality, amount of substance or mass.
  • Mole fraction: Solves for either mole fraction.
  • Parts per million (ppm): Solves for either ppm, mass of solute or mass of solution.
  • Parts per billion (ppb): Solves for either ppb, mass of solute or mass of solution.
  • Mass / volume %: Solves for either m/v %, mass of solute or volume of solution.
  • Volume / volume %: Solves for either v/v %, volume of solute or volume of solution.
  • Mass / mass %: Solves for either m/m %, mass of solute or mass of solution.
  • Mol and volume: Solves for either mol, concentration or volume.
  • Initial and final solution: Solves for either initial or final concentration.
  • Reaction rate: Solves for either final or initial molarity, final or initial time.
  • Titration (acid and base): Solves for either concentration or volume.
  • % Yield: Solves for either % yield, actual yield or theoretical yield.
  • Heat capacity: Solves for either heat capacity, heat transferred or change in temperature.
  • Specific heat capacity: Solves for either specific heat capacity, heat capacity or mass of substance.
  • Energy to heat a substance: Solves for either energy, mass, specific heat and temperature.
  • Latent heat: Solves for either heat transfered, mass or latent heat.
  • Boiling point elevation: Solves for either change in boiling point, boiling point elevation constant or molality.
  • Freezing point depression: Solves for either change in freezing point, freezing point depression or molality.
  • Change in internal energy: Solves for either change in energy, heat added or work done.
  • Enthalpy: Solves for either enthalpy, internal energy, pressure or volume.
  • Gibbs free energy: Solves for either change in Gibbs free energy, enthalpy, temperature or entropy.
  • Entropy with heat & temperature: Solves for either entropy, heat energy or temperature.
  • Entropy with system multiplicity: Solves for either entropy or multiplicity.
  • Nernst equation: Solves for either cell potential, temperature, mol or reaction quotient.
  • Nernst equation (at 298 K or 25oC): Solves for either cell potential, temperature, mol or reaction quotient.
  • Concentration: Solves for either initial or final concentration or initial or final volume.
  • Molecular mass calculator: Finds the molecular mass of compounds or chemical equations.
  • Chemical equation balancer: Balances chemical equations including ions.
  • Initial and final concentration: Solves for either initial and final concentrations or volumes.
  • pH dilution: Solves for final pH with dilution of an acidic solution.
  • Gas calculators
  • Ideal Gas Law: Solves for either gas pressure, volume, moles of gas or temperature.
  • Moles of a gas: Solves for either moles of a gas, mass of sample or molecular mass.
  • Charles' Law: Solves for either initial or final volume, or initial or final temperature.
  • Boyle's Law: Solves for either initial or final pressure, or initial or final volume.
  • Gay-Lussac's law: Solves for either initial or final pressure, or initial or final temperature.
  • Avogadro's gas law: Solves for either initial or final volume, or initial or final moles of gas.
  • Combined Gas Equation: Solves for either initial or final pressure, initial or final temperature, or initial or final volume.
  • Gas mole fraction (by pressure): Solves for either pressures or mol fraction.
  • Graham's law and effusion: Solves for either rate of effusion or molar mass.
  • Osmotic pressure: Solves for either osmotic pressure, mol, temperature or volume.
  • Raoult's law: Solves for either vapour pressure of solution, mole fraction or vapour pressure.
  • Number of ideal gas particles: Solves for either number of particles or mol.
  • Mass of ideal gas: Solves for either molar mass, mass of gas or mol of gas.
  • Molar mass of ideal gas: Solves for either molar mass, mass or mol of gas.
  • Volume of ideal gas: Solves for either molar volume, volume of gas or mol of gas.
  • Molar volume of ideal gas: Solves for either molar volume, gas volume or mol of gas.
  • Maths calculators
  • Linear line equation: Solves for either y, m, x or c value of the linear line equation.
  • Coordinate data: Solves for the linear line equation, y-axis intercept, gradient, gradient angle, area under a graph line, distance between points, mid point coordinates, perpendicular line equation and parallel line equation from 2 sets of x and y coordinate values.
  • Angle between lines: Solves for the angle between two lines from their gradient values.
  • 2 Unknowns: Solves for 2 unknowns of the form ax + by = c.
  • 3 Unknowns: Solves for 3 unknowns of the form ax + by + cz = d.
  • 4 Unknowns: Solves for 4 unknowns of the form ax + by + cz + dw = e.
  • Quadratic equation: Solves for the root 1 and root 2 values of x in the equation ax2 + bx + c = 0, and solves for the x and y values for graphing.
  • Cubic equation: Solves for the root 1, root 2 and root 3 values of x in the equation ax3 + bx2 + cx + d = 0.
  • Quartic equation: Solves for the root 1, root 2, root 3 and root 4 values of x in the equation ax4 + bx3 + cx2 + dx = 0.
  • Complex number calculator: Allows 12 functions to be performed on a complex number, and two complex numbers can be added, subtracted or multiplied.
  • Matrix calculators: Matrix arrays to any power can be added, subtracted or multiplied.
  • Square matrix properties: Inverse, determinant, trace values, QR decomposition, Eigenvalues.
  • Vector calculators
  • Operations on 2D or 3D vectors: Addition, subtraction, multiplication, dot product, length and angle in degrees and radians.
  • Resolving a vector: Resolves a vector for x and y magnitude values.
  • Vector magnitude: Solves for the magnitude of a resultant vector.
  • Addition of resultant vectors.
  • Vector product by magnitude.
  • Vector addition: Cartesian coordinates.
  • Vector subtraction: Cartesian coordinates.
  • Vector magnitude: 2D Cartesian coordinates.
  • Vector magnitude: 3D Cartesian coordinates.
  • Angle between vectors: 3D Cartesian coordinates.
  • Vector cross product: 3D Cartesian coordinates.
  • Vector dot product: 3D Cartesian coordinates.
  • Triangle calculators
  • Right triangle (2 values entered with one length): Solves for all side lengths, all angles, area, perimeter, circumscribed radius, inscribed radius, bisecting A, B & C, altitude A, B and C.
  • Non-right triangle (3 values entered with two lengths): Solves for all side lengths, all angles, area, perimeter, circumscribed radius, inscribed radius, bisecting A, B & C, altitude A, B and C.
  • Side and angle calculators (SSA, ASA, SAA, SAS, SSS): Solves for all side lengths, area and perimeter.
  • Trigonopmetry calculators (sin, cos, and tan): Solves for angle and side length.
  • Half-life calculators
  • Number of half-lives: Solves for either number of half-lives, elapsed time or half-life.
  • Final amount: Solves for either initial amount, number of half-lives or final amount, and gives % remaining, % consumed and unit amount consumed.
  • Half-life: Solves for either half-life, initial amount, final amount or elapsed time.
  • Growth / decay by %: Solves for either initial amount, final amount, rate of growth or time taken, change in amount and doubling time.
  • Exponential growth / decay: Solves for either initial amount, final amount, growth / decay factor or time taken, change in amount and doubling time.
  • Exponential growth /decay with Euler's number: Solves for either initial amount, final amount, constant growth / decay factor or time taken, change in amount and doubling time.
  • Doubling time: Solves for either rate of growth or doubling time.
  • Statistics calculators
  • General statistical calculator: Calculate for count, minimum, maximum, range, sum, mean, median, mode, harmonic mean, geometric mean, mode frequency, standard deviation, variance, coefficient of variation and % error of a population or sample, allows for data order sorting and displays a report that can be copied into clipboard.
  • Correlation coefficient: Calculate the correlation coefficient of two sets of values.
  • Linear regression analysis: Calculate regression equation, slope, y intercept, number of inputs, mean of x, mean of y, standard deviation of x and y.
  • Combinations and permutations: Calculate combinations and permutations from total number of items and number of items chosen.
  • Probability calculator: Calculate single or multiple probabilities, A, not A, A or B, A & B are mutually exclusive, A & B are not mutually exclusive, A & B are dependent, A given B.
  • Sample size calculator: Calculate required sample size and confidence interval.
  • Frequency distribution: Calculate number of classes and class interval for developing a histogram.
  • Normal distribution: Z value calculator: Calculate Z, left, right, two tailed or middle values.
  • Binomial distribution calculator: Calculate probability of success and probability of failure.
  • Chi Square distribution: Calculate Chi Square value.
  • Poisson distribution calculator: Calculate probability of success and probability of failure.
  • Student T distribution calculator: Calculate T value.
  • Shape calculators
  • Circle: Calculate area, radius, diameter, circumfrence, arc length, sector area, segment radius, segment length.
  • Sphere: Calculate area, volume when full or partly full.
  • Cone: Calculate surface area, base diameter and perimeter, base area, side length, side angle, volume.
  • Cylinder: Calculate surface area, height, diameter, side surface area, area of base and top, volume when full or partly full with a listing by increment.
  • Cylinder with hemispherical ends: Calculate volume when full or partly full with a listing by increment.
  • Square or rectangle: Calculate lengths, area, perimeter and diagonal.
  • Cube or rectangular prism: Calculate lengths, area, diagonal and volume.
  • Parrallelogram: Calculate lengths, perimeter and area.
  • Trapezoid: Calculate volume when full or partly full lengths, perimeter and area.
  • Trapezoid tank: Calculate volume when full and partly full with a listing by increment.
  • Triangle: Calculate side lengths, perimeter and area.
  • Triangular prism: Calculate volume.
  • Ellipse: Calculate area, perimeter, eccentricity, foci from center, vertics.
  • Elliptical tank: Calculate volume when full and partly full with a listing by increment.
  • Parabola: Calculate area, width at a height and perimeter arc length.
  • Torus: Calculate radius lengths, area and volume.
  • Pyramid: Calculate lengths, area and volume.

Science Essentials contains an extensive formular system including the following:

  • Science formulas: An extensive searchable databases of formulas for motion, force and energy, light and waves, electrical, chemistry and general science.
  • Maths formulas: An extensive set of maths rules and formulas including logarithm laws, index laws, algebra laws, factoring, inequalities, radical properties, absolute values, exponents , quadratic equation , matrix laws, complex numbers, vector calculations, common graph equations, trigonometry rules and formula, logic operations and boolean algebra, statistics formula.
  • Derivatives, limits and integrals: Derivative rules, common derivatives, limit rules, common limits, definite integrals, indefinite integrals, trigonometric substitution.
  • Graph equations: A list of common graph shapes and their equations.
  • Trigonometry: Formulas for cos, sin and tan, reciprocal identities, unit circle identities, even odd identities, pythagorean identities, cofunction identities, half angle identities, double angle formula, periodic identities, hyperbolic, pythagoras theorem, laws of sine, cosines and tangents, millwood's formula, sum to product identities, product to sum identities, trigonometry ratios.
  • Triangles: Formulas for perimeter and semi-perimeter, altitudes, circumscribed and inner-scribed, area.
  • Shapes: Formulas for circle, sphere, cylinder, square, cube, oblong, cuboid, trapezium, horizontal and vertical ellipse, pyramid, parallelogram and parabolas.
  • Statistics: An extensive list of statistical formulas including mean, variance, standard deviation, Z-score, regression and correlation, probability, binomial experiments, one sample statistics, confidence intervals, t-statistics, sample proportions, sample size, Chi-squared and central limit theorem.

Science Essentials contains extensive data reference systems including the following:

  • Constants: An extensive searchable database of science constants, number constants, UPAC and NIST STP values, water property values.
  • Number systems: SI prefixes, number types and number terms, counting large numbers, Roman numerals, base numbers, scientific numbers, rules for counting, adding, subtracting, multiplying and division of significant figures.
  • Graphs & normal distributions: Features of cartesian graphs, X-Y graph coordinates, X-Y graph quadrants, scatter plots, linear equations, linear line gradient, normal distribution, mean and standard deviation, variance, skewness.
  • Symbols: An extensive searchable database of science symbols, maths symbols, geometry symbols, statistics and sets symbols, Greek symbols, Roman numerals, electrical symbols, piping and process symbols, data flow chart symbols.
  • SI units: SI units and prefixes, fundamental units, non-SI units in use, SI and CGS units, MKS, CGS and FPS systems.
  • SI derived quantities: Definitions of SI derived quantities, linear and angular quantities.
  • Shapes & angles: Common shapes and angle types, general circle parts, polygons, conic sections, common lens shapes.
  • Scientific method: A flow chart and description of the scientific method.
  • Compounds, elements and ions: An extensive searchable database of compounds providing their molar mass, CAS number, molecular formula and common names, names and molecular formula of cations and anions.
  • Groups and series: An extensive searchable database of alcohols, alkanes, alkenes, alkynes, aldehydes, carboxylic acids, aromatic compounds.
  • Functional and substitute groups: Common functional groups, substituent groups and alkyl groups.
  • Elements : Searchable database of the elements giving 30 properties for each element, monoatomic and diatomic elements.
  • Ions: An extensive searchable database of ions giving their name and chemical formula.
  • Oxides: An extensive searchable database of common oxides.
  • Chemicals in common substances: An extensive searchable database of chemicals found in common substances.
  • Chemical concentrations: Descriptions of common methods used in chemistry to determine concentration.
  • Periodic tables: Several colour coded periodic tables showing metals, semi-metals and non-metals, electronegativity, group classes, atomic radius, 1st ionisation energy, radioactivity, melting points, orbitals and physical states, and also provides data for each element in the periodic table.
  • Acids and bases: An extensive searchable database of common acids and bases, giving their name, molecular formula and molecular weight.
  • pH: Data tables on pH and pOH, pH indicators, definitions for acids and bases, a summary of the general properties of acids and bases.
  • Chemical equations: Information on general chemical equations, state descriptors, manual balancing of equations.
  • Balanced chemical equations: Over 200 balanced chemical equations for various reactants and products.
  • Chemical reactions: Reaction features, reaction types, activity series, reaction rates, general reactions of metals, redox reactions, reduction reactions and oxidation reactions.
  • Atomic structures: Nucleons and electrons, atomic, neutron and mass numbers, atomic mass, molecular mass, formula mass, atomic measurement systems.
  • Vsepr & Lewis dot diagrams: A description of Lewis dot diagrams and full listing of VSPER molecular shapes.
  • Dissociation constants: Dissociation constants for weak acids and weak bases.
  • Thermochemical data: An extensive searchable database of thermochemical data, including heat of formation, enthalpy change and molar entropy values.
  • Latent heats: Latent heat of fusion and latent heat of vaporisation for common substances.
  • Bond enthalpy: Bond enthalpy data for various single and multiple bonds.
  • Solubility of ionic compound: Solubility of various ionic compounds in water.
  • Standard electrode potentials: An extensive searchable database for standard electrode potentials of various chemical reactions.
  • Forms of matter: A flowchart for forms of matter showing homogeneous and heterogeneous substances, mixtures, pure substances, metals, semi-metals and non-metals, and organic and inorganic compounds.
  • Acids and bases: Acid and base definitions, Arrhenius definition, Bronstead-Lowry definition, acid and base properties, an etensive searchable databases of common acids, bases and conjugate pairs.
  • pH, pOH and indicators: Formulas of pH and pOH, pH and pOH concentrations, pH of common substances, pH indicators.
  • Dissociation constants: Ka and pKb values, Kb and pKb values.
  • Waves: General wave terms, wave types, wave formula, diffraction, nodal and anti-nodal lines, refraction.
  • Light: Visible light colours, wavelengths, primary and secondary colours, distance light travels.
  • Logic operations: Logic operations for not, and, nand, or, nor, exor and exnor.
  • Electromagnetic spectrum: Electromagnetic radiation wavelengths and frequencies, visible light wavelengths and frequencies, primary and secondary colours, distance light travels, colour names, radio wavelength and frequencies.
  • Derived mechanical unit flowchart : Interactive flowchart for derived mechanical quantities, descriptions for length, speed, displacement, velocity, momentum, torque impulse, force, pressure, work, power and energy.
  • Derived electrical unit flowchart : Interactive flowchart for derived electrical quantities, descriptions for charge, current, resistance, voltage and power.
  • Radiation: Radiation types and half-life.
  • Physical state changes: Change of physical state, description of physical states.
  • Material property data: Conductivity, density, latent heat and specific heats for common substances.
  • Forms of energy: Diagrams for forms of energy, kinetic energy, potential energy.
  • Atomic and subatomic particles: Atomic nucleons, standard model particles, leptons, hadrons, quarks.
  • Planet data: Radius, mass, density, gravity, escape velocity, sidereal period, orbit of planets.
  • Specific heat: Specific heat values for pure substances, common building materials and gases.
  • Thermal conductivity: Coefficients of thermal conductivity values for common materials.
  • Electron configuration: Full listing of electronic configuration of the elements, Aufbau principle, noble gas elements, data on the quantum numbers.
  • Steam tables: Absolute pressure, specific volume, density, specific enthalpy and entropy.
  • Biology theories and organisation of nature: Cell theory, Darwinian theory, characteristics of living things, organisation of nature.
  • Biospheres & Biomes: Biospheres and major biomes.
  • Taxonomy: Taxonomy groups, cell types, kingdoms.
  • Material cycles: Flowcharts and descriptions of material cycles for water, carbon dioxide, nitrogen and phosphate.
  • Ecological groups: Animal and plant ecological groups.
  • Phenotypes & genotypes: Phenotypes and genotypes, traits, Punnet squares, genetic inheritance.
  • Anatomy: General body areas, anatomical planes, anatomical terms.
  • Nature and living things: The general organisation of nature, cell theory, darwinian theory, characteristics of living things.
  • Cell structure: Descriptions of cell organelle and structures, cell protoplasm, differences between plant and animal cells, differences between prokaryotic and eukaryotic cells.
  • Cell metabolism reactions: Photosynthesis and cellular respiration, light and dark reactions.
  • Phenotypes and genotypes: Traits, Punnet squares, inheriting a gene.
  • Amino acids: mRNA genetic code, amino acids, mRNA codons.

The glossary system provides access to science terms, acronyms, abbreviations, prefixes, suffixes and a phonetic alphabet.

  • General science terms: A glossary of over 800 common terms used in science.
  • Earth science terms: A glossary of common terms used in Earth science.
  • Astronomy terms: A glossary of common terms used in astronomy.
  • Maths terms: A glossary of common terms used in maths.
  • Science fields: An extensive searchable list of fields of science and medical science.
  • Measuring devices: An extensive searchable list of measuring devices commonly used in science.
  • Acronyms & abbreviations: An extensive searchable list of acronyms and abbreviations used in general science and computing.
  • File extensions: An extensive searchable list of file extensions used in computing.
  • Greek: A searchable list of Greek acronyms & abbreviations and measurements.
  • Prefixes & suffixes: An extensive searchable list of prefixes and suffixes used in general science and medical science.
  • Phonetic alphabet: Lists the standard phonetic alphabet.
  • Increasing word vocablary: A system to increase word vocablary.

The topics system can be used to quickly understand the principles of chemistry and physics.

The text is quickly read and easily understood. Any section of text can be summarised by clicking on a button. Quick self-testing systems are available for all sections of text. Interactive diagrams are used throughout. Key terms and definitions are summarised, and can be quickly checked with self-testing.

This system is well suited for students undertaking the IGCSE science courses or similar courses, and it can also be used as a bridging course for science students.

  • Physics
  • Matter and forces: Mass, weight, gravitational field, density, force, extension-load graphs, Hooke's law, resultant force, pressure.
  • Energy, work and power: Kinetic energy, potential energy, power, joules, watts, efficiency, work.
  • Simple kinetic molecular model of matter: Solid, liquid, gas, pressure, evaporation, Boyle's law.
  • Matter and thermal properties: Conduction, convection, radiation, infra-red.
  • Waves: Wave velocity, frequency, wavelength and amplitude, transverse and longitudinal waves, reflection, refraction.
  • Light: Reflection, refraction, optical fibre, critical angle, internal reflection, dispersion.
  • Electromagnetic spectrum: Electromagnetic waves, radio waves, microwaves, infra-red (IR), visible light, ultraviolet (UV), X-rays and gamma rays.
  • Sound: Compressions, rarefactions, audible frequencies, loudness, pitch.
  • Magnetism: Magnet, domain, electromagnetic induction, magnetic field lines, permanent magnet, electromagnet.
  • Electricity (part A): Electric current, potential difference, e.m.f., resistance, ammeter, voltmeter, electrostatic charge, electric field, conductor, insulator.
  • Electricity (part B): Electric current, potential difference, e.m.f., resistance, electric power, circuit breaker.
  • Electric circuits: Circuit diagrams, series and parallel circuits, potential difference, combined resistance, thermistors and light-dependent resistors, relay.
  • Electromagnetic effects: Electromagnetic induction, generator, transformer, magnetic field, left hand rule, right hand rule.
  • Radioactivity: Radioisotopes, alpha particles, beta particles and gamma rays, radioactive decay, half-life.
  • Chemistry
  • Atoms, elements and compounds: Chemical and physical changes, elements, compounds, mixtures, electrons, shells, neutrons, protons, noble gas, periodic table, isotopes, ions, ionic bonds, metals, covalent bonds, dot-and-cross diagrams, ionic lattice structure, giant covalent structures.
  • Experimental techniques: Filtration, crystallisation, distillation, fractional distillation, paper chromatography, impurity, purification.
  • Stoichiometry: Chemical formula, ionic compounds, state symbols, balanced equation, atomic mass, molecular mass, mole, molar mass, concentration.
  • Electricity and chemistry: Electrolysis, electrode, electrolyte, anode and cathode, electroplating.
  • Energy changes in chemical reactions: Activation energy, exothermic and endothermic reactions, bond energy.
  • Acids, bases and salts: pH, anions, cations, acid, base, salt, carbonate, oxide.
  • The Periodic table: Proton number, period number, group number, properties, metals, non-metals, noble gases.
  • Metals: Metals, non-metals, alloy, order of reactivity, metal extraction.
  • Hydrocarbons: Fossil fuels, fractional distillation, hydrocarbons, alkanes, alkenes.
  • Study methods
  • Taking notes.
  • Planning study.
  • Read, recall and revise.
  • Increasing reading speed.
  • Finding information on a page.
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Science Essentials - video