The original Magic School Bus books have a nice charm to them. The pages have a story that can be read along with a large number of additional written and illustrated details. In this one, the class goes to visit a dinosaur dig site. Then they travel back in time. They accidentally go too far, and end up seeing what the site looked like in various points in time. Finally they see where the maiasaura eggs are at the "end" of the dinosaur times. When they return to the present they are able to tell the excavation crew where to look. Then they return to school for parent day.
