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

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

In this design challenge, your child will create a parachute for a small toy using typical household items.

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.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

In this activity, your child will be challenged to build a tall tower out of building bricks! The instructions include questions prompts to guide students through the design challenge.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

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

Has your child ever played weatherman? Try this science activity that lets kids try their hands at observing and predicting the weather.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

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.

Introduce your child to the amazing, almost magical phenomenon of static electricity!

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

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

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

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

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

This science fair project examines how seeds hitchhike on animals and clothing.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

I scream, you scream, we all scream for homemade spearmint ice cream!

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.