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In this science fair project, students use the streak test to tell minerals apart from each other.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

This project compares the strength of one, two, and three-ply toilet paper.

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.

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

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

Examine the effect of pressure on carbonation in soda.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

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 determines which method of hand cleansing is the most effective.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

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

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.