4th and 5th Grade Science Activities : Page 3

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

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.

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 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.

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.

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!

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.

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.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

In this fun activity, your child will create their very own solar oven to bake s'mores!

In this design challenge, your child will make a bottle rocket using typical household items.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.