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What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

This science fair project idea determines what household items are good conductors of electricity.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

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.

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

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

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

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

Make a backbone model to explore human anatomy and life science.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

Does your child always demand to know why the sky is blue, how the sun moves across the sky, or where wind comes from?

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

This science fair project idea investigates how the shape of an object affects drag.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

Here's a fourth grade science craft with lots of benefits: it's good for birds, good for your child's learning, and good for the planet, too.

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

This second grade arts and crafts activity is all about caterpillars emerging from their cocoons as butterflies.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!