Gallery
Discover apps people built on Collabby by chatting. Run them, then remix to make them yours.
Area and Units
Tile and count 1 cm squares, then stretch each side to see why 1 m² is 10,000 cm², not 100.
by Anonymous
Units of Length
Read millimeter ticks by placing objects on a 20cm ruler, then see one length as mm, cm, m, and km to pick the unit that fits best.
by Anonymous