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

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.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

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

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

Here's a fun activity that will have your child researching, collecting, and charting plant specimens from the neighborhood.

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

In this activity your child will make a coiling snake out of simple household materials, and also find out why they coil.

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.

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.

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!

Make sourdough bread...and learn some colonial history and modern science in the process!

In this plant habitats activity, children play the role of an ecologist and take surveys of different areas to discover the best habitat for dandelions.

Want to help make studying the nervous system a little more fun? This thinking cap is a great way to learn external human brain anatomy.

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

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.

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

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

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

In this game, players will learn interesting facts about animal adaption and practice them using a fun matching card game!

With this hands-on activity, you'll show how fall colors are hidden in the leaf all year long!

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.

This science fair project idea is develops new or improved paper making techniques and encourages recycling.

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

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

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

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.

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.