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

This science research project challenges students to think of more effective lobster farming methods.

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.

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.

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.

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

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

Believe it or not, the common spud has enough electrochemical energy to power a small digital clock.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

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.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

This science fair project idea researches the effects of acid rain on plant growth.

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

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

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

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

Dive into the world of cooking oil and smoke points to discover just how fast some oils start smoking.