Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

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

Teach your creative second grader about proportions, animals, and proper cutting methods with cucumber carving.

This basketball project explores the best way to make the perfect shot every time.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

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

Here's a fun activity that will have your child researching, collecting, and charting plant specimens from the neighborhood.

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.

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

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

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

Perk up your front porch with this hanging vase craft, perfect for spring and for getting kids outdoors!

In this activity, your child will learn about a style of gardening that uses moss, also called "kokedama."

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!

Teach your child to dye eggs with natural ingredients from the grocery store. From pink to gold, these eggs are perfect for hiding, hunting or simply munching.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

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

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

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

Try hammering some plants with your kids to teach them a valuable lesson in flower science while making beautiful artwork in the process!

This science fair project idea experiments with spinning color wheels and optical illusions.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

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

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.