Science

Having Fun with Science
Your Science Book Online
Practice Science Experiments
National Geographic Kids
The Human Body 
Exploratorium
Launchball

Cells

Interactive Cell Model
Test Your Knowledge About Cells 
Inside a Cell 
Virtual Electron Microscope 

Classifying Organisms
Why do we classify organisms?
6 Kingdoms
Protists, Bacteria, Fungi
Bacteria
Micro-organisms Interactive website
Look through the microscope
More pictures

The Nervous System

See a neuron in action
3-D view of the brain
Mind activities

The Circulatory System
Learn about your heart
Various models and information

The Respiratory System 

Kids' Health.org 
Interactive models and lessons 
Practice 

The Skeletal System
More about your bones
Good Information

Weather
Weather Center
Weather links
BBC Weather
Weather Station
Predict the weather game


Physical Science
Properties of Matter
Periodic Table
Web elements


Astronomy
Space Place

Earth Day Research Project Links:

Deforestation of Trees

Children of the Earth
What are Rainforests?
Kids Connected to Conservation

Energy

Energy Kids
Energy Conservation Links 
Making Energy Fun 

Animals

Endangered Species
Rainforest Animals
Rainforest Animals2
Rainforest 3

Air Pollution

Clean Air Kids
Sunwise for Kids 
ESA Kids 

Water

Water Conservation
Ways to Save Water
Clean Water Program
Clean Water 
Types of Water Pollution 

Watershed Game

Everything

Eek! Our Earth!
Ecokids