Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

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

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

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

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

This science fair project idea examines the reason boats are shaped and engineered.

This clay "painting" activity encourages and supports creative development and critical thinking skills.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

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

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

This biodiversity project examines the biodiversity in your own backyard.

This season is a great time to explore the many shapes, sizes, and species of evergreen trees. Download our "field guide" activity and learn more!

Is your child a young ornithologist in the making?

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

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

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.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.