Reuse and recycle cardboard tubes to make spooky spiders, kooky caterpillars, wacky worms, and more.

Explore solids and liquids with your young scientist by making gluep, a goopy substance that can behave like both a solid and a liquid!

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

Create a habitat for a butterfly right in your own backyard, and build your first grader's science knowledge while you're at it.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

This activity is a great way to stretch the boundaries of your child's imagination and build up important critical thinking skills.

Make a kindergarten "discovery table" that reinforces both science and writing skills. Here's how:

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

Protozoa and ciliate and amoeba, oh my! The objective of this science fair project is for students to use a microscope and identify microscopic life.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Create homemade seed packets with your kids. This activity combines your kids' love of science and the outdoors with a little writing and drawing fun.

In this simple and social activity, children use size comparison skills to find objects in nature that are bigger, smaller, longer, and shorter.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

Develop your child's green thumb with this easy planting activity. These plants are guaranteed to grow fast and are "brown-thumb" proofed!

Here's a simple craft activity that can help your youngster better visualize the life cycle of a frog as a circle.

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

The next time you and your fifth grader go on a hike, take along this key to figure out which common North American animal left a track along the river bank.

Uh-oh! Is that a pill sitting on the counter or a piece of candy?

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!