Cyberchase: Building a Better Raft
The CyberSquad tests if its contraption serves as a raft. While it floats, it contains holes, and Digit gets attacked by piranhas through the holes. The group determines it needs to build a raft with no holes and no overlap. Together, they combine square pieces that they find on the floor to make a big raft. Inez explains that they've created a tessellation, and she defines the meaning of the word.