In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

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 project, waves of vibrations are experimented with using water in glasses.

This project compares the strength of one, two, and three-ply toilet paper.

Find out whether a longer airplane will fly farther or a wider paper airplane.

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

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

Unlike other seed sprouting projects, this one allows kids to compare five different sprouts (either 5 herbs or 5 flowers) by watching them grow in a glove.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

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.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

This second grade arts and crafts activity is all about caterpillars emerging from their cocoons as butterflies.

You don't need to wait for rain to see a rainbow. Make one yourself, and teach your child about light and weather in the process.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

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.

Let your fabulous crafter use their favorite flowers, fruits and herbs to whip up a delicious perfume that they can proudly present to a friend or a loved one.

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