3rd - 8th Grade Science Activities : Page 4

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

This project will explore whether test subjects, deprived of points of reference, will, in attempting to walk a straight course, walk in circles.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Learn all about balance and motion as your child designs a corn maze!

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

Find out whether packaged seeds actually do expire in this new science fair project idea.

In this science fair project, students make their own rain gauge to measure rainfall.

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

Learning about how plants grow is a building block in the early grades science curriculum. Put a fun twist on this life science concept with these cup monster friends!

This project examines Newton's First and Second Laws of Motion with a bicycle and water balloons.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

Science fair project the demonstrates Newton's Third Law using a milk carton filled with water.