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

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.

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!

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

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

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.

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

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!

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.

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

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!

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

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.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

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

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

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

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

This science fair project idea investigates how color affects temperature.

This project tests the hypothesis that dark colors absorb more heat than light colors.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

The project determines which type of birds prefer which type of birdseed.

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.

This science fair project idea explores substances that cause a bubble to last longer.

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.

This science fair project idea investigates if fats add to the flavor of food.

Explore if planting seeds in a certain direction will affect how fast it germinates.

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.