This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

In this project children practice the scientific method while playing with puffy paint.

The project investigates how water and movement affects erosion.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

This science fair project idea provides evidence that air is everywhere and takes up space.

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

Learn about nature by making your own mini moss garden.

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

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

This science fair project idea explores how length affects the weight a bridge can hold.

This science fair project idea determines which method of hand cleansing is the most effective.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

This science fair project idea researches the effects of acid rain on plant growth.

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.

This science fair project idea produces varying pitches of sound.

In this investigation, an oil spill is simulated in a jar to observe the damage that oil spills have on the ocean and ocean life.

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

Explore the chemistry of latex polymers with this outrageous, hilarious science activity.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

This biodiversity project examines the biodiversity in your own backyard.

This is a fun way to introduce kids to the concept of volume, and give them a quick hands-on activity to boot.

Teach your child the meaning of recycle and reuse by repurposing plastic spoons as plant markers for your vegetable garden.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

Take a nature walk in your backyard or local park to find one object for every letter of the alphabet. Then put them together in this handy nature book.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

In this activity, your kid has your permission to get his socks nice and filthy. In fact, it's a necessity, because those socks are going to make a garden.

You don't need to wait for rain to see a rainbow. Make one yourself, and teach your child about light and weather in the process.

Explore scientific concepts with this experiment that introduces kids to the scientific method!