In this video from *Cyberchase*, Bianca is planning a sleepover birthday party. To figure out the maximum number of friends she can invite, she decides to count how many sleeping bags she can fit over the area of her living room floor. In the accompanying classroom activity, students use the concepts presented in the video to determine the area of multiple shapes. This resource is part of the Math at the Core: Middle School Collection.

Contributor:

Funder:

Producer:

© 2017 PBS & WGBH Educational Foundation. All rights reserved.