Why?

By Dave Prochnow, Kathy Prochnow

Subjects: Juvenile literature, Children's Books/Ages 9-12 Nonfiction, Science, Children's 9-12 - Science, Children: Grades 3-4, Experiments, Experiments & Projects, Engineering

Description: Presents forty-nine experiments for the young engineer, astronomer, chemist, meteorologist, biologist, and physicist.