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Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

Discover whether cold or hot water from the faucet will boil faster on the stove.

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

This basketball project explores the best way to make the perfect shot every time.

This science fair project idea explores whether color affects a person's emotional state.

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

This surprisingly good glue recipe comes from common kitchen items.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

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

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

Let your young scientist explore a brave new world of sound with an experiment that just requires a handful of common household items.

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

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

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

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

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

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

This project examines what types of objects burn and which burn faster and cleaner.

Learn about different fern fronds with your third grader as you create lacy, natural decorations on your Easter eggs this year.

This craft is a great way to explore the fascinating world of spiders and their webs as you collect spider webs from around your house with your third grader.