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Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

Help your kindergarten science maven explore the water cycle without getting everything wet.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

This science fair project idea explores whether color affects a person's emotional state.

Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

Help your child understand surface tension by showing them how they can create a "skin" on top of water.

Some fossils have been been preserved for billions of years! Help your kid understand how fossils are created and preserved with this crafty project.

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

An home science experiment for older students that teaches about the science behind heat.

This science fair project idea examines which type of insulation holds in the most heat.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

Science fair project which teaches you how to make your own homemade glue by combing curdled milk with baking soda.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

This science fair project idea explores whether talking to a plant will help it grow.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

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

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.