In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

This project compares the strength of one, two, and three-ply toilet paper.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

The project investigates how friction affects motion by using different surface textures.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

Recreate the fantastic phenomena of solar eclipses with your child using just a flashlight, a quarter, and her very own face!

Using scherenschnitte, your science-savvy second grader will be able to create and display each part of a vegetable!

In this project, waves of vibrations are experimented with using water in glasses.

Got a birdwatcher on your hands? Bring the birds to your backyard by making a zany bird feeder using an orange and some string.

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

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

In this science fair project you will make a model of a cell membrane using very simple material.

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

Is your little scientist up for a rocky challenge? Let them make their own geode rocks using eggs and epsom salts!

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

In this design challenge, your child will create a parachute for a small toy using typical household items.

Using a toy race car kids create a visual model of the Doppler Effect.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.