Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

Show your child how to construct a homemade thermometer. It's hands-on fun and a great way to learn about this important instrument!

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

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

Make a planter full of delicious seasonings and classic grilling vegetables, great for a Fatherâs Day gift or a fun start-of-summer outdoor activity.

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.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

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

Help your child learn about animal classification with this fun and delicious activity.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

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

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

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.

In this project, the fingerprints of family members are compared to determine if people from the same family have similar fingerprints.

Find out whether packaged seeds actually do expire in this new science fair project idea.

This science fair project idea explores whether talking to a plant will help it grow.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

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

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

Here's a fun and simple activity to introduce your child to surface tension, and pull an awesome stunt in the process!

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

In this science fair project, students create their own miniature salt flats at home.