I’ve never actually seen a whale (other than on TV), so when my science kids measured out a Blue Whale, all I could think of was how incredibly BIG it is! I had a ball of bright orange yarn, and on a nice day, we went out into the parking lot. I had one child stand at the beginning of the yarn, and the rest measured out the appropriate feet. Then I had them lay down head-to-feet (or as close as possible) to see how we measured up! We did this for the Blue Whale, the Orca, and the Baluga.