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.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

Help your kindergartener identify and sort eight different kinds of common seeds on this "seed wheel" plate you can use all growing season.

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.

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.

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.

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.

Help your child learn about animal classification with this fun and delicious activity.

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

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

Science fair project that cultivates slime mold and monitors the stages of its development.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

Take a trip to the pet store and then make a scrapbook to help your kindergartener learn the difference between living and non living things!

Do this activity to help your kids see how seeds contain "baby" versions of big plant stems, roots, and leaves.

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?

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.

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

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.

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.

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

Your child will create an adorable Christmas tree from their footprint and practice counting while decorating their tree with objects of a variety of textures.

Invite your kindergarten marine biologist to practice in scientific identification and categorization while creating a lovely treasure box.

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.