Free · See water reshape sand hills

Water and Sand Erosion Lab for Kids

Add moving water above two sand hills and watch the cellular slopes shift grain by grain.

  • Clear, kid-friendly steps
  • Private in your browser
  • No signup

Creative cell experiments

Water and sand erosion lab

Add water above two sand hills and watch moving cells reshape the slopes.

Active cells 0 Steps 0 Brush Water Opening experiment
Two dry sand hills are ready. Paint water above them and start the flow.Draw on the experiment. Arrow keys move the keyboard cursor; Enter paints.

Runs only in this tab with Sandspiel’s local WebAssembly core. No login, gallery, chat, ads, uploads, or saved creations.

Powered by Sandspiel, an open-source library available under MIT.

Three simple steps

How to use it

  1. Choose a material and draw on the large experiment area.
  2. Pick a motion speed, then start, pause, or undo while the cells change.
  3. Reset to restore the starter scene. Nothing is uploaded or saved.

Private by default

Your words and choices stay in this browser tab. There are no accounts, uploads, ads, or trackers inside the tool. Close the tab and the working data is gone.