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

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

This science fair project idea investigates if fats add to the flavor of food.

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

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

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

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

Do you think heat can affect a plant's growth rate?

Cleaning can be a chore, but not with this sudsy experiment!

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

This science fair project idea explores the egg's thin membrane.

Explore scientific concepts with this experiment that introduces kids to the scientific method!

This project investigates the affect of storage temperature on microwave popcorn.

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

In this science fair project, students make their own rain gauge to measure rainfall.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

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

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

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

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.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

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

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!