What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

In this activity, students will be challenged to describe and count the ways a toy moves from one position on a grid to another.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

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 cats can be trained in the same way that dogs can.

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

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

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!

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

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

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

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?

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

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

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

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

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

This science project allows students to study the psychology of happiness.

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

This science fair project idea explores how length affects the weight a bridge can hold.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

This science fair project idea investigates the hardness property of minerals.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.