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

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

This is a fun and inexpensive project and it's a great way for your child to build basic geometry skills, like shape recognition and pattern/angle familiarity.

How do organic materials become soil? This science experiment measures what materials biodegrade.

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

In this design challenge, your child will use building bricks to create a funny face. The activity instructions include question prompts thta can help guide your child through the creative process, and promote their problem-solving skills.

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.

Construct and experiment with a periscope using reflected light rays to gather an image.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

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.

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

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

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

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

Is it a square or a circle? See if you can trick your friends with this zany science project!

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

Create your very own scented hand sanitizer that will help your child to keep those nasty germs at bay!

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

Help your child measure breezy weather in her environment by making a wind vane for kids, a simple version of the classic scientific measurement tool.