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This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

This science fair project idea investigates if fats add to the flavor of food.

This science fair project idea examines the reason boats are shaped and engineered.

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

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.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

This project investigates the affect of storage temperature on microwave popcorn.

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

This science fair project idea explores the egg's thin membrane.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

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

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

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

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

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

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

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.

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

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

This science fair project idea examines whether boys and girls differ in reflexes.