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A place for interactive teaching tools.

Curated applets, notes, and resources across Mathematics, Chemistry, Physics, and Biology - built for Years 7 to 12.

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Applets, files, videos, and quizzes - filter by type, subject, year level, and tags.

APPLET Yr 11

Unit 2 Physics Motion Test 2 Forces and Momentum Practice

Criterion-by-criterion practice for the VCE Physics Unit 2 Test 2 on forces and momentum, with 74 exam-style questions across 16 skill criteria and 3 topics: Newton's laws of motion, Newton's second law scenarios, and momentum and impulse. Pick a criterion from the sidebar and work through its questions: 58 short-answer items with mark allocations and 16 multiple choice, 187 marks in total, covering free-body diagrams, action-reaction pairs, lifts, connected blocks, pulleys, inclined planes, strings in equilibrium, collisions, impulse and force-time graphs. Numerical answers can be typed into a maths input and checked automatically, and every question reveals a worked solution broken into separate steps showing where each mark is earned. Self-marking with Got it / Partly / Missed fills a per-criterion progress bar so gaps are visible at a glance, and progress is saved in the browser between sessions. 44 questions regenerate as similar questions with fresh numbers for extra practice, per-question notes, a pop-up calculator, a scratchpad and a sketch tool for drawing on diagrams are available while working, and all 41 diagrams are embedded in the page itself.

Physics
VCEUnit 2Test 2
APPLET Yr 11

Unit 2 Physics Motion Test 3 Energy and Fields Practice

Criterion-by-criterion practice for the VCE Physics Unit 2 Motion Test 3 on energy and fields, with 162 exam-style questions across 36 skill criteria and 7 topics: work, springs, field models, non-uniform electric fields from point charges, uniform electric fields between plates, magnetic force on moving charges, and forces on conductors. Pick a criterion from the sidebar and work through its questions: 126 short-answer items with mark allocations and 36 multiple choice, 382 marks in total. Numerical answers can be typed into a maths input and checked automatically against a tolerance, and every question reveals a worked solution broken into separate steps showing where each mark is earned. Self-marking with Got it / Partly / Missed fills a per-criterion progress bar so gaps are visible at a glance, and progress is saved in the browser between sessions. 85 questions regenerate as similar questions with fresh numbers for extra practice, per-question notes, a pop-up calculator and a scratchpad canvas are available while working, and all 69 diagrams are embedded in the page itself.

Physics
VCEUnit 2Test 3
APPLET Yr 11

Unit 2 Physics Motion Test 1 Kinematics Practice

Criterion-by-criterion practice for the VCE Physics Unit 2 Test 1 on kinematics, with 125 exam-style questions across 29 skill criteria and 7 topics: scalars and vectors, straight-line vector maths, scalars and vectors in motion, motion graphs, suvat equations, vector maths in two dimensions, and projectile motion. Pick a criterion from the sidebar and work through its questions: 96 short-answer items with mark allocations and 29 multiple choice, 310 marks in total. Numerical answers can be typed into a maths input and checked automatically against a tolerance, and every question reveals a worked solution broken into separate steps showing where each mark is earned. Self-marking with Got it / Partly / Missed fills a per-criterion progress bar so gaps are visible at a glance, and progress is saved in the browser between sessions. 52 questions regenerate as similar questions with fresh numbers for extra practice, per-question notes, a pop-up calculator and a scratchpad canvas are available while working, and all 49 diagrams are embedded in the page itself.

Physics
VCEUnit 2Test 1
APPLET Yr 11, 12

Unit 3 Area of Study 3 Physics Practice: Generation of Electricity

Criterion-by-criterion practice for VCE Physics Unit 3 AOS 3, with 105 exam-style questions across 24 skill criteria and 8 topics: magnetic flux, Faraday's law, Lenz's law, generators and alternators, AC electricity and RMS, transformers, transmission of power, and photovoltaic systems. Pick a criterion from the sidebar and work through its questions: 81 short-answer items with mark allocations and 24 multiple choice. Numerical answers can be typed into a maths input and checked automatically against a tolerance, and every question reveals a worked solution broken into separate steps showing where each mark is earned. Self-marking with Got it / Partly / Missed fills a per-criterion progress bar so gaps are visible at a glance, and progress is saved in the browser between sessions. 48 questions regenerate with fresh numbers for extra practice, a pop-up calculator and a scratchpad canvas are available while working, and all diagrams are embedded in the page itself.

Physics
VCEUnit 3AOS 3
APPLET Yr 8

Year 8 Science Chemistry Revision Practice

Criterion-by-criterion revision practice for Year 8 Chemistry, with 192 questions across 48 skill criteria and 6 topics: structure of the atom, using the periodic table, elements, compounds and mixtures, physical change, chemical change, and rates, corrosion and combustion. Pick a criterion from the sidebar to get a short teaching intro and then work through its questions: 144 short-answer items with mark allocations and 48 multiple choice, 428 marks in total. Every question reveals a worked solution split into separate steps showing where each mark is earned, and self-marking with Got it / Partly / Missed fills a per-criterion progress bar so gaps are visible at a glance, with progress saved in the browser between sessions and a history panel of past attempts. 56 questions regenerate as similar questions with fresh numbers, substances and scenarios for extra practice. A pop-up calculator, a periodic table reference, and sketch and scratchpad canvases are available while working, and all 46 diagrams (particle arrangements, shell diagrams, element boxes, particle-diagram classification) are embedded in the page itself.

Chemistry
Year 8revisionpractice questions
APPLET Yr 11, 12

Unit 3 Area of Study 1 Physics Practice: Motion

Criterion-by-criterion practice for VCE Physics Unit 3 AOS 1, with 171 exam-style questions across 39 skill criteria and 7 topics: Newton's laws of motion, Newton's second law scenarios (connected bodies, pulleys and inclined planes), circular motion, projectile motion, work and energy, momentum and impulse, and springs. Pick a criterion from the sidebar and work through its questions: 132 short-answer items with mark allocations and 39 multiple choice, 424 marks in total. Numerical answers can be typed into a maths input and checked automatically against a tolerance, and every question reveals a worked solution broken into separate steps showing where each mark is earned. Self-marking with Got it / Partly / Missed fills a per-criterion progress bar so gaps are visible at a glance, and progress is saved in the browser between sessions. 102 questions regenerate as similar questions with fresh numbers for extra practice, including multiple choice, a pop-up calculator and sketch and scratchpad canvases are available while working, and all diagrams are embedded in the page itself.

Physics
VCEUnit 3AOS 1
APPLET Yr 11, 12

Unit 3 Area of Study 2 Physics Practice: Fields

Criterion-by-criterion practice for VCE Physics Unit 3 AOS 2, with 181 exam-style questions across 42 skill criteria and 7 topics: field models, non-uniform electric fields around point charges, uniform electric fields between plates, magnetic force on moving charges, forces on conductors and DC motors, gravitational fields, and satellite motion. Pick a criterion from the sidebar and work through its questions: 139 short-answer items with mark allocations and 42 multiple choice, 418 marks in total. Numerical answers can be typed into a maths input and checked automatically against a tolerance, and every question reveals a worked solution broken into separate steps showing where each mark is earned. Self-marking with Got it / Partly / Missed fills a per-criterion progress bar so gaps are visible at a glance, and progress is saved in the browser between sessions. 94 questions regenerate as similar questions with fresh numbers for extra practice, and the 63 diagrams are embedded in the page itself. A sketch tool lets you annotate any diagram, a scratchpad canvas gives you room to work, and a pop-up scientific calculator is available on every question.

Physics
VCEUnit 3AOS 2
APPLET Yr 11, 12

Unit 4 Area of Study 2 Physics Practice: Practical Investigation

Criterion-by-criterion practice for VCE Physics Unit 4 AOS 2, with 57 exam-style questions across 16 skill criteria and 6 topics: variables and experimental design, graphing, gradient and intercepts, interpreting data, errors, and conclusions. Pick a criterion from the sidebar and work through its questions: 41 short-answer items with mark allocations and 16 multiple choice, 125 marks in total. Numerical answers can be typed into a maths input and checked automatically against a tolerance, and every question reveals a worked solution broken into separate steps showing where each mark is earned. Written answers can be typed and kept alongside each question, diagrams can be annotated with a built-in sketch tool, and a pop-up scientific calculator with history is available throughout. Self-marking with Got it / Partly / Missed fills a per-criterion progress bar so gaps are visible at a glance, and typed answers, notes, sketches and progress are all saved in the browser between sessions. All diagrams are embedded in the page itself.

Physics
VCEUnit 4AOS 2
APPLET Yr 11, 12

Unit 4 Physics Area of Study 1 Practice: Modern Physics

Criterion-by-criterion practice for VCE Physics Unit 4 AOS 1, with 163 exam-style questions across 36 skill criteria and 8 topics: single slit diffraction, Young's double slit experiment, the photoelectric effect, standing waves on a string fixed at both ends, matter as a wave, photon momentum, atomic absorption and emission spectra, and special relativity. Pick a criterion from the sidebar and work through its questions: 131 short-answer items with mark allocations and 32 multiple choice. Numerical answers can be typed into a maths input and checked automatically against a tolerance, and every question reveals a worked solution broken into separate steps showing where each mark is earned. Self-marking with Got it / Partly / Missed fills a per-criterion progress bar so gaps are visible at a glance, and progress is saved in the browser between sessions. All diagrams are embedded in the page itself.

Physics
VCEUnit 4AOS 1
APPLET Yr 11, 12

Lenz Law (moving bar magnet and solenoid)

Drag a bar magnet towards or away from a solenoid and watch the induced current respond. Conventional current arrows run up the front and down the back of the windings, induced N and S poles are labelled on the solenoid faces, a galvanometer needle deflects with the emf, and the gap is annotated as attracting or repelling so students can check that the induced current opposes the change in flux. Controls for number of loops, magnet strength, pole orientation, and toggles for the magnet's own field lines and the traced solenoid field. A running commentary states whether flux is increasing or decreasing, alongside the equation for induced emf. Arrow keys nudge the magnet and F flips the poles.

Physics
Lenz's lawelectromagnetic inductionFaraday's law
APPLET Yr 11, 12

Photoelectric Effect Applet (Non-PhET)

Photoelectric bench built for VCE Unit 4, as a self-hosted alternative to the PhET simulation. Sweep frequency across visible and UV, set beam power and anode voltage from retarding to accelerating, and switch the target metal between sodium, calcium, magnesium, zinc, copper and a mystery metal with a hidden work function. An animated tube shows photons striking the cathode and electrons crossing to the collector, with live readouts for wavelength, photon energy, photon rate, maximum kinetic energy, stopping voltage and current. Two graphs update alongside it: current against anode voltage, and maximum kinetic energy against frequency with gradient h and intercept minus the work function. A threshold marker tracks f0 on the frequency slider, and holding power constant while raising frequency shows the photon rate falling as one over f.

Physics
photoelectric effectphotonswork function
APPLET Yr 10, 11, 12

Projectile Motion (2D suvat)

Interactive projectile simulator with no air resistance and g = 9.81 m/s². Set launch speed and angle, or switch to horizontal and vertical components, plus a launch height off a platform. Scrub or play through the flight and watch the head-to-tail velocity triangle update on the trajectory, with live readouts for horizontal and vertical velocity, resultant speed, direction, position, range, maximum height and flight time. Three linked motion graphs (displacement, velocity and acceleration against time) show both components side by side and can be dragged to scrub time. Light and dark mode.

Physics
projectile motionkinematicssuvat
QUIZ Yr 8, 9

Atomic Streak

Unlimited revision quiz for Year 8–9 Chemistry covering states of matter, atomic structure, the periodic table, electron shells, element classification, and chemical reactions. Ten topics with mixed or individual selection: (1) States of matter — particles, kinetic energy, solids/liquids/gases; (2) Atomic structure — protons, neutrons, electrons, nucleus, shells; (3) Atomic & mass number — calculations with Z and A; (4) Periodic table — elements, groups, periods, symbol/name lookup; (5) Electron shells — 2n² rule, shell capacity, electron configuration notation; (6) Metals & non-metals — properties, lustre, ductility, malleability, conductivity, melting point, periodic table position; (7) Elements, compounds & mixtures — particle diagrams with SVG, classification into pure substances or mixtures; (8) Chemical formulae — counting atoms, calculating ratios, reading subscripts; (9) Physical & chemical change — evidence of reactions, reversibility, new substances; (10) Reactions & word equations — combustion, corrosion, rusting, common reactions, rate of reaction, fossil fuels. Question types: multiple choice (shuffled four-option or column-based layout on wider screens), numeric input, text matching with flexible accept rules (spaces, semicolons, commas, periods converted). Real-time tracking: current streak (with flame icon), best streak across sessions (localStorage), score ratio (correct/total), and percentage this session. Milestone notifications at 5, 10, 20, 50 consecutive correct. Four toggles control question mix; questions avoid consecutive repeats. Integrated periodic table reference (first 20 elements: H–Ca) showing atomic number, symbol, and relative atomic mass. Keyboard shortcuts: 1–4 to answer MC, Enter to submit freeform or advance, Y/N/I for physical/chemical/inconclusive classification. Dark/light theme support. Teaches: foundational chemistry language, particle model, periodic table literacy, and basic classification.

Chemistry
chemistry quizstates of matteratomic structure
APPLET Yr 9, 10, 11, 12

Brownian Motion Simulator

Interactive simulation of Brownian motion: a large pollen grain (visible) suspended in water and bombarded by countless invisible water molecules. The grain's erratic jiggling demonstrates the reality of molecular motion and was the subject of Einstein's 1905 analysis (confirmed experimentally by Perrin). Three main controls: (1) Temperature slider (50–900 K) — increases molecular kinetic energy, making collisions more energetic and frequent, causing more violent grain motion; (2) Number of molecules slider (50–1000) — affects the statistical averaging of forces; (3) Grain radius slider (14–70 px) — smaller grains receive poorer averaging of collisional forces and move more dramatically. Three toggles: Show molecules (visualize the otherwise invisible molecular bombardment), Trace the grain's path (red line showing erratic random walk), and Slow motion (¼ speed for observation). Real-time readouts: simulation time, displacement from starting position, cumulative collision count, and mean molecular speed (px/s). Buttons: Pause/resume, Reset (restart with current settings), Clear trace. Educational explanation section covers why the grain moves (unbalanced collisions), why temperature matters, why grain size matters, and historical significance (Einstein's molecular evidence). Demonstrates foundational concepts of kinetic theory: molecular motion, random collisions, and temperature as measure of average kinetic energy.

Physics
Brownian motionkinetic theorymolecular motion
QUIZ Yr 9, 10, 11, 12

Identifying Chemical Change Quiz

Unlimited quiz on distinguishing chemical changes from physical changes based on experimental observations. 48 scenarios grouped into three categories: (1) Definite chemical changes (15 questions) — rusting, burning, precipitation, neutralization, fermentation, enzyme browning, thermal decomposition — requiring identification of new substances or irreversible changes; (2) Physical changes only (15 questions) — melting, dissolving, evaporation, condensation, sublimation, changes of state, reshaping — where the substance remains unchanged; (3) Inconclusive observations (18 questions) — bubbles, temperature change, colour change, smell, cloudiness, mass loss — where additional tests would be needed to decide. Three-choice answers: Yes (chemical change proven), No (only physical), Inconclusive (observation cannot decide alone). Each question provides feedback explaining the correct answer and why. Real-time readouts: current streak (consecutive correct answers, with pop animation), best streak achieved, and overall accuracy percentage (correct/total). Keyboard shortcuts: Y/N/I for quick answering, Enter or Space to advance. Questions randomize on each attempt, avoiding immediate repeats. Helpful definitions in footer: Yes = evidence proves new substance formed; No = only physical properties changed; Inconclusive = observation alone cannot decide without further testing. Teaches critical thinking about experimental evidence and the criteria for identifying genuine chemical reactions.

Chemistry
chemical changephysical changechemical reactions
APPLET Yr 10, 11, 12

Kinematics - Motion Graphs

Interactive kinematics tool where students draw one motion graph (position, velocity, or acceleration) and the other two are automatically calculated and displayed. Draw on a 10-second timeline using four tools: freehand (lightly smoothed), line, quadratic Bézier, or cubic Bézier. The tool numerically derives/integrates graphs in real-time: draw x(t) to get v(t) = dx/dt and a(t) = dv/dt; draw v(t) to derive acceleration; draw a(t) to integrate for velocity and position. A vertical track displays a turtle animation acting out the motion, with optional velocity/acceleration vector arrows and a motion diagram (strobe marks). Control conditions: set initial position (x₀) and initial velocity (v₀) when not drawing on the position graph. Four presets: constant velocity, speeding up, slowing down then stopped, out-and-back with turnaround. Sticky readout bar shows current t, x, v, a values; scrub bar for manual time control; play/pause/rewind and variable-speed playback (0.25×–2×). Light and dark mode. Teaches relationships between kinematic graphs via visual feedback and animation.

Physics
kinematicsmotion graphsposition
QUIZ Yr 11, 12

Motion Graphs Quiz

Comprehensive unlimited quiz on interpreting and matching kinematics graphs (x-t, v-t, a-t) for VCE Unit 2 Physics. Eight linked question types with three filtering modes: (1) Interpretation – given a single graph, identify the motion (constant velocity, rest, speeding up, slowing down); (2) Numerical – calculate velocity from x-t gradient, acceleration from v-t gradient, or displacement from v-t area (trapezium rule); (3) Graph matching – select the correct graph type that matches given motion (x-t → v-t, v-t → a-t, or description → x-t). Question types: (a) interpret x-t segment (identify motion from position graph), (b) interpret v-t segment (identify motion from velocity graph), (c) gradient of x-t equals velocity (read off and calculate), (d) gradient of v-t equals acceleration (read off and calculate), (e) area under v-t equals displacement or distance (signed or unsigned area via trapezium rule), (f) match x-t graph to correct v-t graph, (g) match v-t graph to correct a-t graph, (h) match verbal description to x-t graph. Real-time tracking: current streak (correct answers in a row), best streak achieved, score (correct/total attempted). Four-choice multiple choice with detailed worked explanations. Keyboard shortcuts: 1–4 to answer, Enter or Space to advance. Randomized question generation ensures variety; same question type avoids consecutive repeats. SVG graph rendering with grid, axes, highlights, and mini previews for matching questions. Teaches foundational kinematics: relationship between position, velocity, and acceleration; reading graphs; calculating rates of change; understanding motion descriptions.

Physics
motion graphsposition-timevelocity-time
APPLET Yr 11, 12

Pair Production

Interactive simulation of gamma-ray pair production: a high-energy photon near a nucleus transforms into an electron-positron pair, demonstrating E = mc². Adjustable photon energy slider (0.2–10 MeV) with real-time physics calculations and visual animation. Threshold check: pair production requires minimum 1.022 MeV (2 × 0.511 MeV electron rest mass). Energy budget bar shows decomposition into electron rest energy, positron rest energy, and kinetic energy shared equally between pair. Real-time readouts: photon frequency (Hz) and wavelength (pm), total kinetic energy, Lorentz factor γ, and particle speed (%c). Canvas animation shows incoming gamma ray, nucleus recoil, pair creation flash, and diverging electron and positron tracks. Optional magnetic field (into page) toggle shows curved tracks curving in opposite senses due to opposite charges, with spiral inward due to ionisation energy loss. Auto-repeat toggle. Playback speed control (0.25×–2×). Educational theory section covers mass-energy equivalence, why nucleus is needed for momentum conservation, charge conservation, magnetic field behaviour, and connection to historical bubble-chamber positron discovery (Anderson 1932) and modern PET imaging.

Physics
pair productiongamma rayphoton
APPLET Yr 8, 9, 10

Physical versus Chemical Change

Interactive molecular-level visualization comparing physical and chemical changes through five animated scenarios. Physical changes: (1) thermal expansion and contraction (particles vibrate and spread/contract), (2) dissolving salt in water (ions separate but remain intact), (3) cutting hair (long molecules simply separated). Chemical changes: (4) combustion of methane (CH₄ + 2O₂ → CO₂ + 2H₂O, bonds break and reform), (5) rusting of iron (4Fe + 3O₂ → 2Fe₂O₃, new substance forms). Each scenario shows molecular transformations via canvas animation with: play/pause controls, manual slider to scrub through reaction stages, reset button, dynamic captions explaining each stage, chemical equations, and element legend. Dark theme with colour-coded atoms (H, C, O, Fe, Na, Cl). Teaches the distinction: physical changes are usually reversible with molecules unchanged; chemical changes form new substances with rearranged atoms and are difficult to reverse.

Chemistry
physical changechemical changemolecules
APPLET Yr 11, 12

Sketching Sine and Cosine Graphs

Step-by-step interactive tutorial for sketching transformed sine and cosine graphs. Select parameters: function (sin or cos), amplitude a (range −3 to 3), frequency b (0.5, 1, 2, or 3), vertical shift d (−2 to 2). Seven guided steps: (1) read off amplitude, period T = 2π/b, midline y = d, and reflection status; (2) draw the midline as a dashed guide; (3) mark maximum and minimum bounds (midline ± amplitude); (4) divide one period into quarters and mark T/4 intervals with π-fraction labels; (5) plot five key points following the pattern (start/end on midline for sin, max/min for cos; max/min/max for sin; min/max/min for cos); (6) sketch a smooth wave through points (flat at extrema, steepest at midline crossing); (7) extend the periodic pattern across multiple periods. Random function generator, keyboard navigation (arrow keys, space, N for new), and real-time graph display. Teaches systematic method for hand-sketching trigonometric functions without memorizing the full curve.

Mathematics
sinecosinegraph sketching
APPLET Yr 11, 12

Special Relativity Lab

Four linked interactive demonstrations of special relativity phenomena, designed for classroom exploration. Tab 1 – Terrell-Penrose effect: visualize how moving objects appear twisted/rotated due to light-travel-time delays (the optical illusion of Lorentz contraction viewed from rest frame). Tab 2 – Spacetime diagram: explore Minkowski diagrams with worldlines, light cones, events, and simultaneity surfaces; manipulate objects and see how simultaneity surfaces tilt with velocity. Tab 3 – Starfield flight: accelerate through a star field and observe aberration (stars appear to drift toward the direction of motion) and Doppler shift (color changes as you approach/recede from sources). Tab 4 – Light clock: animate a photon bouncing between two mirrors to visualize time dilation; compare clock ticks in the rest frame vs moving frame, showing how moving clocks run slow by factor γ. Each tab has a velocity slider (β = v/c, 0–0.995) with keyboard control (arrow keys fine adjust, shift for coarse steps). Play/pause button for animations. Real-time readouts of derived quantities: Lorentz factor γ, time dilation factor, length contraction factor. Educational note panels explain the physics behind each effect. Preset buttons for common velocities (0, 0.5c, 0.9c, etc.). Designed for classroom demonstration and student exploration of relativistic intuition.

Physics
special relativityTerrell-Penrose effectspacetime diagram
APPLET Yr 11, 12

Special Relativity Room

Immersive 3D first-person visualization of special relativity effects in a 20-metre walkway environment. Adjustable velocity slider (0–0.995c) with preset buttons. Displays Lorentz factor γ and real-time length contraction of the room (20 m → contracted length), time dilation (your clock vs room clocks), and photon travel time c = 10 m/s (sim speed). Canvas shows marked pavement (floor markers every 1 m, painted stripes every 5 m with counter), lamp pillars, benches, crate, trees, and station clocks on signboards. Rest-frame cyan wireframe ghost overlay shows uncontracted room geometry for reference. Six toggle options: pause motion, ghost visibility, Terrell view (full photon-arrival optical effect showing apparent rotation and stretching), aberration (light-direction warping only), Doppler shift (red/blueshift tinting with beaming), clock offsets (relativity of simultaneity with leading clocks lagging by β·Δz′/c). First-person mouse-look controls (drag to look around). Room passes by at constant world speed; proper-time integration shows time dilation on dual readouts (your time vs room time). Three.js WebGL with custom shader injection for relativistic optics (per-vertex transformation combining light-delay, length contraction, aberration, Doppler). Teaches Lorentz transformation, reference frames, and counterintuitive optical phenomena.

Physics
special relativitylength contractiontime dilation
APPLET Yr 11, 12

2D Vector Addition (Bearings)

Interactive tool for teaching 2D vector addition using the component method with relative bearings (N30°E notation). Two adjustable vectors A and B with independent magnitude (1–20 units) and bearing (N/S with 0–90° offset to E/W). Real-time canvas visualization: Cartesian grid with compass labels, vectors drawn tip-to-tail, optional component breakdown (Ax, Ay, Bx, By shown as dashed lines), and resultant vector R = A + B. Worked solution panel with four-step breakdown: (1) resolve A into components using sin/cos; (2) resolve B similarly; (3) sum the component pairs (Rx = Ax + Bx, Ry = Ay + By); (4) recombine using Pythagoras and inverse tangent to find resultant magnitude and bearing. Four toggles: show/hide components of A and B, show/hide resultant, show/hide resultant's components, show/hide worked solution. Bearing angle arcs drawn at vector tails with reference axis (dotted N or S line) and angle labels. Sign convention: east and north positive; west and south negative. All calculations in arbitrary units with 2 d.p. display. Teaches: bearing notation, component resolution using trigonometry, vector addition principle, recombination via magnitude and angle, and applications in navigation and physics.

Mathematics
vector additionbearingscomponents
QUIZ Yr 11, 12

Circular Functions - Exact Values Quiz

Interactive quiz on circular functions and exact values for sine, cosine, and tangent across the unit circle. Unlimited randomized questions covering exact values at key angles (0°, 30°, 45°, 60°, 90° and their radian equivalents, plus co-terminal and related angles). Tests recognition and recall of exact trigonometric values essential for solving equations and calculus problems. Multiple question types: exact value identification, angle identification from ratios, and related angle calculations. Includes reference materials and worked solutions. Progress tracking and performance statistics.

Mathematics
circular functionstrigonometryexact values
APPLET Yr 10, 11, 12

Bike Tools

Three interactive cycling calculators using physics models: (1) Power to Speed converter - calculates speed from watt output or power from speed, accounting for rider+bike mass, gradient, and aerodynamic position (upright, hoods, drops, or aero bars with CdA values). Shows time for 40km at calculated speed. (2) Climb Calculator - computes time, speed, power-to-weight ratio, vertical gain, and VAM (vertical metres per hour) for a climb given distance, gradient, and power output. (3) Gearing Calculator - determines speed at various cadences (70-110 rpm), gear ratio, development (metres per pedal revolution), and gear inches for specified chainring, cog, wheel/tyre size. Physics model includes rolling resistance (Crr 0.004), aero drag (air density 1.225 kg/m³), gravity, and 2.5% drivetrain loss. Responsive design with light and dark mode support.

Mathematics
cyclingbikepower
APPLET Yr 7, 8

Fractions and Decimals Quiz

Interactive 10-question quiz converting between fractions and decimals. Three modes: Fractions to Decimals (see a fraction, pick the decimal), Decimals to Fractions (see a decimal, pick the fraction), or Mixed Challenge (both directions). Focuses on halves, quarters, fifths, tenths, and hundredths. Four multiple-choice options per question with explanations after each answer. Star rating and mistake review at the end. Misconception distractors included.

Mathematics
fractionsdecimalsconversion
APPLET Yr 7, 8, 9

Adding, Subtracting, Multiplying and Dividing Fractions Quiz

Interactive quiz on fraction arithmetic: add, subtract, multiply, and divide improper fractions. Two modes: Practice (untimed, 10/20/30 questions with immediate feedback) and Sprint (timed, 2/5/10 minutes, answer as many as possible). All answers must be given in simplest form with both numerator and denominator (or leave denominator blank/enter 1 for whole numbers). Warns if answer is equivalent but not simplified. Results summary shows missed problems for targeted revision.

Mathematics
fractionsimproper fractionsaddition
APPLET Yr 7, 8, 9

Types of Energy Quiz

Comprehensive 20-question quiz on types of energy: kinetic, heat, light, sound, electrical, gravitational potential, elastic potential, chemical potential, and nuclear potential. Three question types: multiple choice (12 questions), true/false (6 questions), and matching scenarios to energy types (2 questions with 4 pairs each). Instant feedback with explanations after each answer. Progress bar, running score, and detailed results with question-by-question review (✓/✗ checkmarks). Performance message based on score percentage.

Physics
energy typeskinetic energypotential energy
APPLET Yr 11, 12

Ironman Calculator

Comprehensive triathlon race planning calculator for sprint, Olympic, 70.3, and Ironman distances. Six tabbed sections: (1) Swim - pace per 100m with wetsuit benefit and sighting/drafting adjustments; (2) Bike - intensity (% of FTP), aerodynamic position (CdA 0.22-0.32), gradient, and course hilliness multiplier; (3) Run - fresh open pace with triathlon slowdown adjustment; (4) Transitions - T1 (swim to bike) and T2 (bike to run) times; (5) Nutrition - carb intake (g/h for bike and run), fluid intake (mL/h), and sodium (mg/h) with gel and bottle calculations; (6) Summary - total time prediction, visual time split bar, elapsed times, percentage breakdown, and standard race cutoffs with pass/fail status. Physics model includes rolling resistance, aerodynamic drag, and drivetrain loss. Real-time calculations update all tabs. Light and dark mode support.

Mathematics
triathlonironmanracing
APPLET Yr 10, 11, 12

Pace Tools

Three interactive running pace calculators: (1) Pace Converter - converts between pace (min:sec per km), speed (km/h), pace per mile, and calculates race times for standard distances (5km, 10km, half marathon, marathon) with preset pace buttons. (2) Race Predictor using Riegel formula (exponent 1.06) - predicts race times at different distances based on a known race result, useful for training plan target times. (3) Split Generator - calculates km-by-km splits for a goal time with three pacing options: even pace, negative splits (1% or 2% faster second half). All time inputs accept h:mm:ss or mm:ss format. Responsive design with light and dark mode support.

Mathematics
runningpacecalculator
APPLET Yr 8, 9, 10, 11

Periodic Table Explorer

Interactive periodic table with full element details. Click any element to see atomic number, mass, group, period, protons, neutrons, electrons, and electron configuration (toggle between Bohr shells and Schrödinger notation). Switch between two colour schemes: element categories (alkali, halogen, noble gas, lanthanoid, etc.) or metals vs non-metals. Highlight first 20 elements for Year 8 focus.

Chemistry
periodic tableelement propertiesatomic number
APPLET Yr 11, 12

VCE Physics - Fields Quiz

VCE Physics Unit 3 AOS 1 quiz on electric and magnetic fields. 10 randomized questions per attempt with different numerical values each time. Two question types: multiple choice and numerical calculations with SVG diagrams. Electric field topics: Coulomb's law, field strength of point charges, uniform fields between plates, forces on charges, work and kinetic energy, inverse square law, electron acceleration. Magnetic field topics: force on current-carrying wires, force on moving charges, circular motion in magnetic fields, magnetic field around straight wires, work done by magnetic forces. Hints with formulas and VCAA data sheet values. Worked solutions after each answer. Marked to 3 significant figures with ±3% tolerance. Progress tracking and topic-by-topic review (✓/✗).

Physics
VCEUnit 3AOS 1
APPLET Yr 11, 12

VCE Physics Unit 4 AOS 1 - Light and Matter Quiz

VCE Physics Unit 4 AOS 1 unlimited randomized quiz on 'How has understanding about the physical world changed?'. Ten topic areas with checkboxes to select: wave equation, diffraction, double slit interference, superposition and standing waves, photoelectric effect, photoelectric graphs, wave-particle duality, matter waves (de Broglie wavelength), atomic spectra and energy levels, special relativity. Two question types: numeric (accepting calculator-style 3.2×10^-7 or e-notation 3.2e-7 with ±2.5% tolerance) and multiple choice. Includes hints with relevant formulas and VCAA data sheet constants. Streak tracking, accuracy statistics, and clickable review of all previous questions with worked solutions.

Physics
VCEUnit 4AOS 1
APPLET Yr 8

Year 8 Statistics Quiz 2

Comprehensive 19-question Year 8 Statistics quiz covering data types (nominal, ordinal, discrete, continuous), distribution shapes (skew, symmetrical, bimodal), sampling methods (convenience, simple random, systematic, stratified), measures of central tendency (mean, median, mode), quartiles and interquartile range (odd and even sets), stratified sampling calculations, and interactive column graph drawing. Three question types: multiple choice, numeric input fields, and interactive bar builder. Full review at end showing all answers with CORRECT/INCORRECT tags. Aim for about 20 minutes.

Mathematics
statisticsdata typesnominal
QUIZ Yr 8, 9

Year 8 Statistics and Sampling Quiz

Comprehensive 19-question quiz covering core Year 8 statistics: nominal, ordinal, discrete and continuous data types; distribution shape (symmetrical, skewed, bimodal); sampling methods (simple random, systematic, stratified); measures of location (mean, median, mode); quartiles and interquartile range; stratified sampling calculations; and interactive column graph building. Progressive difficulty with immediate marking and full review.

Mathematics
statisticsdata typesdistributions
82 Resources
72 Applets
41 Topics
4 Subjects