3rd Grade 4th
- Build a Bird
You have the chance to build a bird and place it in a habitat. Can you make one that has a good chance of survival?
- How Rocks Change
Are you ready for this challenge? See if you can tell what causes rocks to change over time.
- Interactive Water Cycle
An animated activity that lets you control the water cycle as you learn.
- Interactive Weather
Let the sun shine, or make the wind blow by changing
the temperature and humidity.
- Rock Cycle
The clock is ticking. Can you beat the time and identify rocks and their class? Take the challenge!
- Balloons and Static Electricity
Why does a balloon stick to your sweater? Rub a balloon on a sweater, then let go of the balloon and it flies over and sticks to the sweater. View the charges in the sweater, balloons, and the wall.
This colorful site will help you understand series and parallel circuits.
- Circuit Construction Kit: DC
Experiment with an electronics kit! Build circuits with batteries, resistors, light bulbs, and switches.
- Mountain Maker, Earth Shaker
Push your mouse around to move continents and change the landscape.
- Go to the Head of the Solar System
Answer questions about celestial objects as they travel through the solar system.
- Gravity And Orbits
Move the sun, earth, moon and space station to see how it affects their gravitational forces and orbital paths.
- Gravity Force Lab
Visualize the gravitational force that two objects exert on each other. Adjust properties of the objects to see how changing the properties affects the gravitational attraction.
- Gravity Launch
Launch a rocket into space to see how the force of gravity can pull an object toward the earth and moon.
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