Book Description
The Magic School Bus was a series of children's books intended to teach scientific concepts to children. The books feature the exploits of Ms. Frizzle and her class of students at Walkerville Elementary School who board a magical school bus which takes them on educational adventures to space, under the Earth, into the human body, or to other such locations. The books were written in the first person from the point of view of an unnamed student in the Friz's class.

Synopsis:
Arnold has swallowed the Magic School Bus! Now, instead of seeing an exhibit of the human body at a museum, the class is taking a look at Arnold's stomach, his intestines, his bloodstream, and more from the inside on this heart-stopping fieldtrip - one the reluctant Arnold would be happy to miss.

From Publishers Weekly
Ms. Frizzle shepherds her reluctant students through the human body in a book that is as fancifully conceived as it is educational. Ages 6-9.

From School Library Journal
Grade 1-4-- Time to board the Magic School Bus again with that wild, wacky, and wonderful teacher, Ms. Frizzle. After she teaches her class about the human body and they visit the science museum...