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Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

In this activity, your child will make her own "quicksand" to better understand how a substance can be both fluid and solid at the same time.

Every time a sound is produced it emits a sound wave. This experiment demonstrates how sound travels, using nothing more than a spoon and a string!

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

Help your young scientist celebrate the wonders of the night sky in the comfort of your own home.

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.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

Learn with makes water molecules work with this fun and easy science activity!

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.

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

In this project students experiment with making music using only glasses of water.

Take a dive into the candy jar with this yummy science experiment.

This science fair project idea experiments with spinning color wheels and optical illusions.

Try this chemistry experiment with your curious kid and get some "shocking" results!

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

Deck the halls with last season's Christmas lights for a spectacular and electrifying science activity.

Construct batteries that make electricity from fruits with this fun science fair project.

Explore the chemistry of latex polymers with this outrageous, hilarious science activity.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

Construct and experiment with a periscope using reflected light rays to gather an image.

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

Grow borax crystals and get your child excited about Earth science with this crafty science experiment.

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.