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

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

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.

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.

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!

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

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!

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

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.

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.

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

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.

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

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

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

Try this simple activity with your child to guesstimate the age of a tree in your yard and nurture her developing math skills while you're at it!

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

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.

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.

Introduce your child to the importance of preserving the world's biodiversity by turning a lesson on endangered species into a fun game for the whole family.

Beetles come in many shapes and colors. Here's how your second grade child can create his own beetles to paint and play with!

Help your child get to know the least-appreciated of the five senses, the sense of smell, with a smelling station.

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

This activity is a great way to teach kids that, to find examples of science in action, they donât need to look any further than their own backyard.

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

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!

Try this fun and simple activity to help nurture your child's observation skills and nourish a growing love of science!

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.