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.

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.

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

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.

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!

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 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!

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

Cherries usually burst with flavor, but in this science experiment they burst with osmotic pressure. This science activity will blow your curious kid's mind!

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

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.

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

This activity works well with a group or just with a parent and child, and it can make a great party game since it's both fun and inexpensive.

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

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

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.

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.

Create a three-dimensional X-ray of your child's hand in this simple modeling activity. All you need to get started are black paper and drinking straws

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.