Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

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

This science fair project idea determines which method of hand cleansing is the most effective.

Teach your child how to make an all-natural, yellow-brown dye, using just walnut shells and water. This deep dye can be used on textiles, art, and wood.

How do mirrors work? What is light, and how does it travel? Explore light and reflection with your preschooler with these simple hands-on experiments.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Take advantage of the spring and summer sun in this arts and crafts activity that has your learner creating pretty flower prints.

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

Learn whether writing things down really makes things easier to remember.

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

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

This science fair project idea investigates the difference in reaction times between boys and girls.

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

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

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

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

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.

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.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

In this fun activity, your child will create their very own solar oven to bake s'mores!

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.