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

Check out this silly game that will put your kid's animal habitat knowledge (and acting skills) to the test.

Help your first grader design and create his very own bird feeder out of an empty milk carton.

What better way to nurture your child's imagination than by making a fairy house out of materials found in nature!

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

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

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

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

Make your own greenhouse - out of a balloon! Your child will learn how greenhouses work as they plant radish seeds and watch them grow.

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 fun guessing game, your child uses his sense of smell and taste to figure out what is in the container. Here's how to play:

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!

This snowman's not abominable, he's adorable! Your child can bring her very own snowman to life while practicing how to create texture.

Your kindergartener will make prints of his favorite fruits and vegetables and learn how to organize and assemble his very own book.

Help your kindergartener expand social studies and science work while creating this lovely bag clip for the holidays.

Recycling may be a confusing concept for your little one, so take the time to teach them the magic of compost - right in your own backyard!

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

Teach your child about healthy foods and how to make a meal that is good for them with this fun activity that you both can do together.

Using scherenschnitte, your science-savvy second grader will be able to create and display each part of a vegetable!

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.

Learn how to grow an avocado plant indoors with your 1st grader in this hands-on gardening activity.

Children are imaginative story-builders. Create a shoebox habitat with your child to put those budding creative instincts to good use.

In this simple and social activity, children use size comparison skills to find objects in nature that are bigger, smaller, longer, and shorter.

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

Ignite your kindergartener's love of adventure and learning with an imaginary trip under the sea.

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

Create your very own scented hand sanitizer that will help your child to keep those nasty germs at bay!

Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.

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

The fish most kids see is usually filleted, and it's hard to see how it came from a lake or sea. This cool gyotaku activity blends life science with art!