Top: Kids and Teens: School Time: Science: Technology: Machines (83)
http://www.simiax.com//Kids_and_Teens/School_Time/Science/Technology/Machines/index.htm

The Secret Life Of Machines - Drawings and explanations to common machines and how they work.

Animated Engines - Animated pictures explain the inner workings of a variety of steam, stirling, and internal combustion engines.

Simple Machines - Gives real-life examples of the six simple machines, plus an easy quiz, and links.

Introduction to Simple Machines - A look at the six basic types of simple machines, with pictures and quizzes.

Edheads Simple Machines Activities - Explore the rooms of a house to discover and identify various simple machines. Look in the tool shed to learn about Compound Machines.

Simple Machines Learning Site - An overview of the six basic types of simple machines with pictures and student drawings.

Simple Machines - Explains simple machines such as levers, gears and pulleys with text, pictures and animations.