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Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

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.

A homemade lava lamp gives any room a retro flair. Find out how to make a homemade lava lamp, and learn some science too, with this educational activity.

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

This science fair project idea investigates whether plants can survive being frozen.

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

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

Explore if planting seeds in a certain direction will affect how fast it germinates.

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

Looking for a fun summer adventure? Learn what it was like to be a prospector during the California Gold Rush by panning for gold in a local creek.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.