What to notice
Explore · Predict · Explain
Pattern Formation
How can simple local reactions create organized patterns?
Watch a pattern emerge
The idea
Local changes, large-scale structure
Two chemicals react and spread at different rates. The image shows the concentration of V: dark means less, bright means more. Preset names describe typical appearances, not guaranteed outcomes.
Drag on the scene to add V. This is a Gray–Scott teaching model, not a complete explanation of animal markings.