Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

Is your little scientist up for a rocky challenge? Let them make their own geode rocks using eggs and epsom salts!

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 which objects float and sink in honey, water, and oil.

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

Test your friends to find out if you can replicate the placebo effect's incredible results.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

Come take off your shoes and explore with your feet. Your child will embark on a barefoot adventure as he plays with different textures.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

Introduce your child to the importance of preserving the world's biodiversity by turning a lesson on endangered species into a fun game for the whole family.

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

This science fair project idea provides evidence that air is everywhere and takes up space.

This project investigates the affect of storage temperature on microwave popcorn.

This science fair project idea produces sounds by creating vibrations using different objects.

You don't need to wait for rain to see a rainbow. Make one yourself, and teach your child about light and weather in the process.

Explore scientific concepts with this experiment that introduces kids to the scientific method!

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

This project determines what category of person is most likely to be ticklish.

It's easier than you think to make homemade play dough -- just a few pantry staples makes a natural version of the toy that kids have loved for generations.

Examine the effect of pressure on carbonation in soda.

Create a self-portrait from natural materials in this collage craft activity!

Got a birdwatcher on your hands? Bring the birds to your backyard by making a zany bird feeder using an orange and some string.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

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