Simulations
213 interactive labs for Physics, Chemistry, Mathematics, Additional Mathematics and Computer Science. Change a variable, watch what happens, then answer the exam question. Free, and no sign-in needed.
Physics
O Level Physics 5054 · 41 labs in 6 chapters
- Motion, Forces and EnergyVector Resultant Lab, Motion Graphs Studio and 7 more9 labs
- Thermal PhysicsParticles in Solids, Liquids and Gases, Gas in a Syringe: Pressure, Volume and Temperature and 3 more5 labs
- WavesWave Machine: Transverse and Longitudinal, Ripple Tank and 5 more7 labs
- Electricity and MagnetismMagnetic Field Plotter, I–V Characteristics and 8 more10 labs
- Nuclear PhysicsAlpha-Particle Scattering, Build a Nucleus and 4 more6 labs
- Space PhysicsEarth, Moon and Sun, Orbits and the Solar System and 2 more4 labs
Chemistry
O Level Chemistry 5070 · 42 labs in 12 chapters
- States of MatterStates and Changes of State and Diffusion: The Ammonia and Hydrogen Chloride Race2 labs
- Atoms, Elements and CompoundsAtom and Ion Builder, Ionic Bonding: Electron Transfer and 2 more4 labs
- StoichiometryThe Mole Machine, Limiting Reactant and Percentage Yield and 2 more4 labs
- ElectrochemistryElectrolysis: What Forms at Each Electrode?, Electroplating and 1 more3 labs
- Chemical EnergeticsEnergy Level Diagrams, Bond Energy Calculator and 1 more3 labs
- Chemical ReactionsRate of Reaction: Collision Theory, Reading Rate Graphs: Tangents and Limiting Reactants and 2 more4 labs
- Acids, Bases and SaltspH, Indicators and Acid Strength, Neutralisation: The pH Curve and 1 more3 labs
- The Periodic TablePeriodic Table Explorer, Group I Metals and Water and 1 more3 labs
- MetalsWhy Alloys Are Harder, Building the Reactivity Series and 3 more5 labs
- Chemistry of the EnvironmentWater: Tests and Treatment, Air Pollution: Sources and Solutions and 1 more3 labs
- Organic ChemistryHomologous Series Builder, Fractional Distillation of Petroleum and 3 more5 labs
- Experimental Techniques and Chemical AnalysisPaper Chromatography and Rf Values, Choose the Separation Method and 1 more3 labs
Mathematics (Syllabus D)
O Level Mathematics 4024 · 42 labs in 9 chapters
- NumberPrime Factors, HCF and LCM, Sets and Venn Diagrams and 3 more5 labs
- Algebra and GraphsSimultaneous Equations: Where Lines Meet, Inequalities: Number Lines and Regions and 4 more6 labs
- Coordinate GeometryDrawing Straight-line Graphs, Gradient, Length and Midpoint and 1 more3 labs
- GeometryBearings and Scale Drawings, Similar Shapes: Length, Area and Volume and 4 more6 labs
- MensurationConverting Units of Area and Volume, Area: Perpendicular Height Matters and 3 more5 labs
- TrigonometryPythagoras' Theorem, Sine, Cosine and Tangent and 2 more4 labs
- Transformations and VectorsReflect, Rotate, Translate, Enlargement: Centre and Scale Factor and 3 more5 labs
- ProbabilityRelative Frequency and Expected Frequency, Sample Spaces: Two Dice and 1 more3 labs
- StatisticsMean, Median, Mode and Range, Pie Charts: Frequencies and Angles and 3 more5 labs
Additional Mathematics
O Level Additional Mathematics 4037 · 41 labs in 14 chapters
- FunctionsDomain, Range and One-One Functions, The Modulus of a Function and 2 more4 labs
- Quadratic FunctionsCompleting the Square: Maximum and Minimum, Discriminant: When a Line Meets a Curve and 1 more3 labs
- Factors of PolynomialsRemainder and Factor Theorems and Factorising and Solving Cubics2 labs
- Equations, Inequalities and GraphsModulus Equations and Inequalities, Substitution: Equations That Are Quadratics in Disguise and 1 more3 labs
- Simultaneous EquationsSimultaneous Equations: A Line and a Curve1 lab
- Logarithmic and Exponential FunctionsExponential and Logarithm Graphs, Laws of Logarithms: The Slide Rule and 1 more3 labs
- Straight-Line GraphsLines: Midpoints, Lengths and Perpendicular Bisectors and Straight-Line Form: The Linear Law2 labs
- Coordinate Geometry of the CircleThe Equation of a Circle, A Circle and a Line: Chords and Tangents and 1 more3 labs
- Circular MeasureWhat Is a Radian? and Arcs, Sectors and Segments2 labs
- TrigonometryThe Six Trigonometric Functions on the Unit Circle, Trig Graphs: y = a sin bx + c and 2 more4 labs
- Permutations and CombinationsSelections: Combinations and Committees and Arrangements: Permutations with Restrictions2 labs
- SeriesBinomial Expansion and the General Term, Arithmetic and Geometric Progressions and 1 more3 labs
- Vectors in Two DimensionsVectors in i, j Form: Position, Magnitude and Unit Vectors and Velocity Vectors: Rivers and Wind2 labs
- CalculusDifferentiation: From Chord to Tangent, Chain, Product and Quotient Rules and 5 more7 labs
Computer Science
O Level Computer Science 2210 · 44 labs in 10 chapters
- Data RepresentationBinary, Denary and Hexadecimal, Binary Addition and Overflow and 6 more8 labs
- Data TransmissionPacket Switching, Serial, Parallel and Duplex and 4 more6 labs
- HardwareThe Fetch–Decode–Execute Cycle, Cores, Cache and Clock Speed and 3 more5 labs
- SoftwareInterrupts and the ISR, High-Level, Assembly and Machine Code and 1 more3 labs
- The Internet and Its UsesFrom URL to Web Page, Blockchain: a Tamper-Evident Ledger and 2 more4 labs
- Automated and Emerging TechnologiesAutomated Control: Sense, Process, Act, A Robot at Work and 2 more4 labs
- Algorithm Design and Problem-SolvingBubble Sort, Linear Search and 3 more5 labs
- ProgrammingFOR, WHILE and REPEAT Loops, String Handling and Library Routines and 3 more5 labs
- DatabasesDesigning a Database Table and SQL Queries2 labs
- Boolean LogicLogic Gates and Logic Circuits, Truth Tables and Expressions2 labs