Dorothy Ann is reading a book about physics. The other kids think it sounds boring. They'd rather play baseball — and use DA's book for home plate! So, Ms. Frizzle pulls up in the Magic School Bus and takes the class inside the book. Soon they're playing baseball in a World Without Friction. But, without friction, they can't stop slipping and sliding around the field! Join the class as they put a stop to this problem and learn all about forces and friction.