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

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

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

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

Invite your third grader to do taste test science to observe how a strawberry tastes when it is paired with various condiments. The results may be surprising!

Here's a fun and simple activity to introduce your child to surface tension, and pull an awesome stunt in the process!

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

Teach your child how butter is created by shaking up cream the old-fashioned way.

In this fun experiment, we'll find out how color affects heat absorption!

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

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

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

Check out this cool science fair project on identifying rocks and minerals for kids.

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

This first grade science activity brings the green grass of early spring inside while teaching your child about the cycles of growth.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

This project determines what category of person is most likely to be ticklish.

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.

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

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

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

Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.

This tricky building block challenge asks your learner to think creatively. They will work on their divergent thinking skills as they try to fill up an index card perfectly with building bricks.

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.

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.