Newton's Cradle
Classic Newton's cradle demonstrating conservation of momentum and energy.
Jackson Smirnov
Teaching on iarepo since May 2026 553 published resources opened 7,751 times
Published resources
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Sonic Boom / Mach Cone
Visualize shock waves and Mach cones from supersonic sources.
Beats and Superposition
Hear and see beat frequency from two interfering sound waves.
Chladni Patterns
Visualize 2D vibration patterns on a plate at different resonant frequencies.
Fourier Synthesis
Build complex waveforms by adding harmonics. See Fourier decomposition.
Ripple Tank Simulation
2D wave phenomena — interference, diffraction, and reflection.
Standing Waves Simulation
Create standing wave patterns with adjustable frequency and boundary conditions.
Double Slit Experiment
Interactive Young's double slit experiment showing interference patterns.
Doppler Effect Simulation
Visualize the Doppler effect with a moving source. See wavefronts compress and stretch.
Gapminder Tools
Explore world development data with interactive bubble charts — income, health, population.
Our World in Data
Interactive charts and data visualizations on global issues — poverty, health, education, environment.
Youglish: English Pronunciation in Context
Search any English word and see it used in real YouTube videos with subtitles.
Conjuguemos: Spanish Verb Practice
Practice Spanish verb conjugations with interactive exercises and instant feedback.
InnerBody: Human Anatomy
Interactive 2D/3D human anatomy explorer with detailed system views.
BioDigital Human: 3D Anatomy
Explore the human body in 3D — skeletal, muscular, circulatory systems.
Chrome Music Lab: Spectrogram
See the frequency spectrum of sounds in real time using your microphone.
Chrome Music Lab: Harmonics
Visualize sound waves and harmonics with interactive oscilloscope.
Chrome Music Lab: Rhythm
Explore rhythm patterns with an interactive visual drum machine.
Chrome Music Lab: Song Maker
Create and share songs using a simple grid-based music maker.
MusicTheory.net: Ear Training
Train your ear to identify intervals, scales, and chords with audio exercises.
MusicTheory.net: Lessons
Interactive music theory lessons — staff, clefs, notes, scales, intervals, chords.
Python Tutor: Visualize Code
Step through Python, Java, C, and JavaScript code execution visually.
Regex101: Regular Expressions
Build and test regular expressions with real-time explanation and match highlighting.
VisuAlgo: Binary Search Tree
Interactive binary search tree — insert, delete, search with step-by-step animation.