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!

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

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.

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

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

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

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.

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

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

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

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.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

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.

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.

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!

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.

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 surprisingly good glue recipe comes from common kitchen items.

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

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

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.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

Explore aromas with your child and help boost her brain power with some fun and interactive science activities.

Who knew that you could make beads out of rose petals? Not only can it be done, but the beads smell wonderful!