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

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

April showers may bring May flowers, but your child can preserve the beauty of spring's bounty all year long with this simple craft project!

Learn how to make marbleized paper with simple everyday ingredients in this fun activity! Your child will learn about oil and water while doing this project.

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

Construct batteries that make electricity from fruits with this fun science fair project.

Will the shape of an ice cube impact how fast the ice melts?

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

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.

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

Examine the effect of pressure on carbonation in soda.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

Science fair project determines relationship between number and variety of insects and spiders by collecting and counting invertebrates in a ecosystem.

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

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

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.

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!

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

Determine which kind of rock (igneous, sedimentary, metamorphic) has the greatest reservoir capacity, which is the ability to hold the most oil and natural gas.

Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!

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

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

This science fair project idea investigates whether plants can survive being frozen.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

This science fair project idea explores substances that cause a bubble to last longer.