This two-ingredient dough, sometimes called "moon sand," is a quick and cheap way to let kids explore their senses, build fine motor skills, and play.

This science fair project idea determines an average personâs ability to use their anaerobic power system over a period of 2 weeks.

Boost your preschooler's attention to detail by getting her to explore the differences between two different pumpkins: large and small.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

This project examines who can jump higher, boys or girls, younger people or older, and how these two factors, gender and age, interact with one another.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

Give your local birds a treat — and your young birdwatcher some fun — with this simple DIY bird feeder.

This project examines the vulnerability of fruit flies, Drosophila melanigaster, to irradiation. Will exposure result in mutations?

Hold a magnet marathon! Explore the power of magnets with your kindergartener in this entertaining and simple science game.

Science fair project that determines whether windmills can be designed so that birds will not feed on them. Will they discriminate between different patterns?

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.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

This project determines whether hands-on practice, mental practice, or no practice leads to better shooting of free-throws.

Put your young paleontologist's puzzle-solving skills to the test by having her hunt for dinosaur bones and then assemble them to create dinosaur skeletons.

Explore aromas with your child and help boost her brain power with some fun and interactive science activities.

This fun activity makes use of pasta shells, paint, and glue make a crab while your child learns about this unique creature.

Combine science with reading and art to help your first grader create an attractive holiday gift for a beloved friend or relative.

This project explores the interaction between air pressure and playing surface in determining a basketballâs bounce.

Make sourdough bread...and learn some colonial history and modern science in the process!

Here's a pressed leaf card project that puts science and writing together for your second grader.

Help your little one figure out the differences between the worlds of air, land and water, a huge step in understanding how our environment works.

Compare the whitening abilities of four different brands of whitening toothpaste to see which one whitens the fastest and which one whitens the most.

Determine which video game elevates the heart rate best and burns the most calories.

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

Make this easy composting dessert and then enjoy the yummy results!

Check out this cool middle school science fair project idea to find the difference between organically grown and commercial brands of foods.

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

Make scented sensory cloud dough. Add it to a sensory table, activity station, or put it in a baggie for extra at-the-park entertainment!

What happens when eyes see something that the brain knows cannot be true? In this science activity, the brain has to "fudge" it when interpreting what you see.

Looking for a fun way to encourage imaginative play? Try crafting these animal dice with your preschooler.