LearnViz STEM
1000 ideas.Every one alive.
Drag sliders, poke simulations and watch maths, physics, chemistry, biology, code and engineering move in front of you.
0topics
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Explore by subject
View all 1000 →Mathematics
Functions, calculus, geometry, probability
245 topics0 learnedPhysics
Motion, waves, fields and the quantum world
227 topics0 learnedChemistry
Atoms, bonds, reactions and solutions
110 topics0 learnedBiology
Genes, cells, bodies and ecosystems
110 topics0 learnedComputer Science
Algorithms, data, logic and machine learning
117 topics0 learnedEngineering
Structures, machines, control and signals
93 topics0 learnedEarth & Space
Planet, climate, stars and the cosmos
98 topics0 learnedTopic of the day
#745 · Computer SciencePattern Matching Automata
Regular expressions compile to state machines that scan text in one pass.
regex ↔ DFAOpen full lesson →Quick picks
Surprise me ✦Projectile Motion
Horizontal and vertical motion are independent: constant vₓ while gravity bends the vertical path.
Conway’s Game of Life
Cells live or die by counting neighbours — gliders, oscillators and computers emerge.
Natural Selection
Individuals better matched to their environment leave more offspring, shifting the population.
The Mandelbrot Set
Iterate z → z² + c; the points that never escape trace an infinitely detailed boundary.
Resonance
Drive an oscillator at its natural frequency and the amplitude grows enormously.
Quicksort
Pick a pivot, partition smaller left and larger right, then recurse.
Binary Search
On sorted data, halve the search range each step: a million items need only 20 checks.
The DNA Double Helix
Two antiparallel strands twist together, held by hydrogen bonds between A–T and G–C base pairs.
How LearnViz STEM works
1
Pick a topic
Browse 1000 topics across 7 subjects, filter them by level, or let “Surprise me” choose one for you.
2
Play with it
Every topic has a live animation. Move the sliders and watch the idea respond in real time.
3
Check yourself
Read the lesson notes, answer the quick quiz and mark the topic as learned to track your progress.
Frequently asked questions
What is LearnViz STEM?
An interactive learning app with 1000 topics in maths, physics, chemistry, biology, computer science, engineering and earth & space. Each topic has an animation, a short lesson and a quick quiz.
Who is it for?
Students revising for school or university, teachers preparing demonstrations, and anyone curious who wants to see how an idea behaves rather than only read about it.
Do I need an account?
No. The app runs in your browser. Topics you mark as learned are stored on your own device.
Which keyboard shortcuts are there?
Space pauses an animation. On a topic page the left and right arrow keys move to the previous and next topic.
Is the content accurate?
Simulations are simplified models built for learning. Read the Disclaimer page for the limits of the content.