The Math Monsters think about conservation of number when working on their garden. Go to a bakery and see a long loaf of bread, two small loaves, and 6 rolls - three outcomes that look different but started with the same amount of dough. Please note: This episode is also available in Spanish.

Originally released by Slim Goodbody, 2000. Streaming video file encoded with permission for digital streaming by Infobase on April 18, 2015.

Math Monsters-Number Conservation (14:00); .