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

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.

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

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

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

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

The concept of metamorphosis is fascinating to children of all ages. Help your child's creativity take flight as she makes her very own butterfly life cycle.

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!

Your child can help your family pet take a breather, and help herself relax, too, with this soothing activity.

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.

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

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.

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

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

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

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.

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.

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.

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.

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.

Nature is the greatest teacher, and you can help facilitate the lesson! Here's how to create a supply backpack to get your kid ready for science action!

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

Grow these wheatgrass and alfalfa friends and watch their hair spring up in just a couple days!

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

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

Creating a home for a toad is an easy and fun project for kids. Here's how to make your very own toad abode.

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.

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

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