Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

This science fair project idea investigates if fats add to the flavor of food.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

This science fair project idea explores the different properties of matter.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

How do organic materials become soil? This science experiment measures what materials biodegrade.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

This science fair project idea determines what household items are good conductors of electricity.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

This science fair project idea explores whether talking to a plant will help it grow.

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.