How Stuff Works - find out how engines, cell phones, and lots of other stuff works
BrainPop - science, health, and technology movies
The Franklin Institute - visit Philadelphia's science museum - tour exhibits, or check out their Hotlists for links to lots of excellent web sites
The Exploratorium - San Francisco's Museum of Science
Science Master - good starting point for reports on science or the place to go if you just want to learn more about science on your own
Time Lines of Science - the history of science discoveries since 1100
Smithsonian Education: Science and Nature - online activities and games
NASA Connect - online guide to the television program produced by NASA
Cells Alive! - information on human cells and microorganisms
Cells Are Us - how cells multiply
I Can Do That! - learn about DNA, RNA, cells, protein, and cloning
Genetic Science Learning Center - find out about DNA, chromosomes, genetic mutations, cloning, and stem cells
Your Gross & Cool Body - gas, dandruff, farts, digestive system and other neat things about how the body works
Twinkle and Eyenstein's Wise Eye Web - information on the eye, including diagrams, and definitions. This site also has some neat optical illusions, and information about guide dogs for the blind
Let's Hear it For the Ear - how the ear works
Skulls: Structure and Function - this site has really great pictures of skulls from all kinds of animals
Exploring the Skeletal System - diagrams and a virtual map of the skeletal system including the names of all of the bones
Neuroscience Resources for Kids - learn about the brain and nervous system
The Algae Home Page - from the Smithsonian Institution - an introduction to algae
Tom Volk's Fungi - all you ever needed to know about fungi
Seeds of Change Garden - information about edible plants from the new and old worlds, how to grow a garden, and other projects relating to edible plants
What Tree is it? - a guide to trees
The Great Plant Escape - learn about plants with Detective Sprout
Plants in Motion - if you think that plants don't move, take a look at this site
The Flying Turtle Science and Technology Exploration Site - how photosynthesis works
Chem-4-Kids - definitions and an explanation of the periodic table
WebElements Periodic Table - lots of information about each element
It's Elemental: The Periodic Table - this periodic table has an essay on each element
The Periodic Table of the Elements - information on the elements and periodic table from Los Alamos National Laboratory
Element Hangman - a game about the chemical elements
Wondernet - hands-on chemistry activities for students by the American Chemical Society
The Learning Matters of Chemistry - computer graphics showing important chemical concepts, downloadable software, and online interactive exercises
The Chem Team - tutorial for high school chemistry classes
The Atoms Family - introduction to atomic structure, energy, light, and electricity
Antimatter: The Mirror of the Universe - everything that you always wanted to know about antimatter
Fear of Physics - explanations of some of the basic ideas of physics
Amusement Park Physics - learn how roller coasters, bumper cars and other rides work - you can also design your own roller coaster