Kids will enjoy this cool demonstration of Newton's Third Law and the conservation of linear momentum.

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.

Science fair project the demonstrates Newton's Third Law using a milk carton filled with water.

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!

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

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

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

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

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.

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

Check out this fun middle school science fair project idea on Newton's third law of motion and how you can change the speed of a rocket.

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

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.

Want to spark your third grader's interest in gardening? Help him make popsicle stick fairies to decorate an enchanting garden oasis.

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!

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.

This Valentine's Day, pair up science and crafting with this simple crystal formation project that's sure to bring a little love into your home.

This science fair project idea compares the cuteness reaction between genders.

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 experiment investigate whether children in different age groups learn better from a computer program or a human teacher.

Does "short circuit" mean that electricity takes a short course? This science experiment provides steps to help you get to the bottom of this science mystery.

In this investigation, three different juices are tested to determine which juice contains the greatest amount of vitamin C.

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

This surprisingly good glue recipe comes from common kitchen items.

Design and build a balloon rocket from an existing design. Think of the ways in which existing designs can be improved, new practical applications

Science fair project that tests the effects of diluted soap on the size of bubbles blown from the solution. Will dilution cause smaller bubbles?