Target: Grades 3-5
Length: 60 minutes
Internet: http://scifiles.larc.nasa.gov ⇒
In "The Case of the Powerful Pulleys", one of the tree house detectives has had an accident and cannot get into the tree house. Using problem-based learning, the rest of the gang investigates the world of simple machines and physical science and "pulls" together to get everyone into the tree house.To order a copy of this video, please visit the Central Operation of Resources for Educators Web site.