In order to save humanity, Olive and Otto must locate a treasure chest that Oscar buried. Every 100 years the Hydraclops comes back to the surface to wreck havoc, so Oscar hid a special device to send it back below. In order to find Oscar’s buried weapon, they’ll need to use their knowledge of maps and their ability to measure lengthwise. Curriculum: Measurement; length

Originally released by Sinking Ship Entertainment, Inc., 2014. Streaming video file encoded with permission for digital streaming by Infobase on March 31, 2021.