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!

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

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

Crystals are a very special structure. In this third grade activity, your child will learn how to grow salt crystals.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."

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!

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

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

If your science savy third grader is up for a challenge, let her bend light with a casserole dish!

Invite your third grader to do taste test science to observe how a strawberry tastes when it is paired with various condiments. The results may be surprising!

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

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.

Help your curious third grader construct a dazzling spinning wheel that will teach him about the science behind colors while providing some silly entertainment!

Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

Bring a little science to your third grader's Christmas as you test out his sense of smell by exposing him to common Christmas scents found in your kitchen.

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.

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

This first grade science activity brings the green grass of early spring inside while teaching your child about the cycles of growth.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

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

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.