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Help your third grader make the Scoop 'N Catch--a great choice for a fun and inexpensive afternoon.

Calculate the mass of the Earth using the sidereal and calendar period of the Moon and Newton's Law of Universal Gravitation in this physics science project!

Celebrate autumn with a seasonal bash. Welcome the fall with a festive party for your little one and her friends, full of crafts, snacks and fun games.

Here's a writing activity that helps young learners explore an ant's perspective...and practice writing, too!

This science fair project idea examines the reason boats are shaped and engineered.

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

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.

Learn about the horizontal and vertical motion of a projectile in this cool physics science fair project idea for advanced middle and high school students.

In this simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.

Kids will enjoy this cool demonstration of Newton's Third Law and the conservation of linear momentum.

This science fair project idea determines whether volunteers remember more information presented orally or visually or kinesthetically.

There are a lot of ways to make decorative wreaths. This wreath uses cloth and egg carton flowers!

What direction should solar panels face? It's not the direction you might think! This free and enlightening science fair project helps kids discover the answer.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Here's how you and your teen can stage your own formal debateâbeyond arguing why chores are unethical! Formal debates improve teens' critical thinking skills.

This activity teaches your third grader how to make a paper cut-out still life, in true Matisse-style.

Create safe lightning for kids! They'll learn how to make lightning at home with this fun science fair project idea illustrating static charges and grounding.

A twist on the gingerbread house, this train is made with graham crackers, icing, and candy decorations. A great 2nd-3rd grade holiday arts and crafts activity.

Explore concepts in current and coltage with these Van de Graaff generator experiments.

Build a magnetic linear accelerator using a ruler, neodymium magnets, and small metal balls in this fun science fair project exploring magnetic propulsion.

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

This optics-based science fair project idea teaches kids about real and virtual images with a mind-bending candle illusion inspired by Pepper's Ghost.

Here's a guide to starting a community clean-up project from scratch.

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

Kids will make a homemade electroscope and explain how it detects static charges through induction in this fun science fair project idea.

The purpose of this science fair project is to investigate whether we can simulate how craters are formed and predict their size and shape.

This project examines germs and their spread in households. The goal is to learn how to stop the spread of germs and other diseases.