Catapults & Trebuchets

Catapults -Classroom project site. Be sure to scroll down to their great list of catapult links.

Destroy the Castle -Online game from NOVA lets you build and test different trebuchet designs. The science behind the weapon is explained in the "How it Works" section.

Trebuchet -This page discusses the design, construction, and firing of a 1/6 scale trebuchet.

Chemistry

It's Elemental -Basic physical and historical information about the elements

Periodic Table of the Elements on the Internet - Information and diagrams for each of the elements

SciFun Home Experiments -Collection of chemistry experiments that you can do at home

Inventors & Inventions

Greatest Engineering Achievements of the 20th Century -Learn about the top 20 achievements of the 20th century and how engineering shaped a century and changed the world.

Inventions A-Z - Links and information on a wide variety of inventions

Inventure Place -The National Inventors Hall of Fame