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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.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Is it a square or a circle? See if you can trick your friends with this zany science project!

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

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

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

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

Plants and light seem to be good buddies, but how far does the friendship really go?

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

This science experiment has students test whether a snail moves faster on concrete or dirt.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

This science fair project will help students learn about non-vascular plants, such as mosses.