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These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

This project examines whether playing music during class helps students learn or if it distracts students from learning.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

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

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

In this project students experiment with making music using only glasses of water.

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

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

The goal of this project is to create an exciting topographical map out of dough.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

On the next chilly, winter day, invite your fifth grader to make a hand warmer by experimenting with the loaded combination of a few natural ingredients.

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

Give your child an introduction to food preservation by making and canning your own yummy, homemade pasta sauce!