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

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

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

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.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

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

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

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.

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

Who knew that you could make beads out of rose petals? Not only can it be done, but the beads smell wonderful!

This project can help prepare your child for a trip to the tide pools, or give him a way to remember some of the many creatures he saw during his visit.

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

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!

Here's a fourth grade science craft with lots of benefits: it's good for birds, good for your child's learning, and good for the planet, too.

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.

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

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

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

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

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

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

This activity provides a solution to all those leaves on your doorstep, while also giving your child a fun science lesson.

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

For a fun family activity to introduce your child to genetics, have your child go on a search for dominant and recessive family genes!

Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

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!