Provides instructions on how to do simple science experiments using simple machines, and gives explanations for why they work.

Describes experiments involving simple machines that follow the scientific method, explores the use of levers to control motion and lift, and shows how the stee

The Childrens Book Review Index contains review citations to give your students and researchers access to reviewers comments and opinions on thousands of books,

Collects experiments pertaining to reflection, refraction, and vision, offering simple projects using household items that demonstrate the behavior of light.

Demonstrates how different kinds of wheels and axles are used to help perform work, and provides examples of some practical uses for wheels and axles.