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

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

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.

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

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

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

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

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.

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.

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.

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.

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!

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

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

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

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

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.

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

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

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

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

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

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.

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

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

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

Your child can explore the wonders of science, and the concept of dehydration, along with creating a healthy and tasty treat!

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.

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