Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

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

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

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

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

Find out whether putting something on top of a plant will inhibit its growth.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

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.

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

Examine the effect of pressure on carbonation in soda.

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

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

Explore if planting seeds in a certain direction will affect how fast it germinates.

Challenge your learner to design and build a city of their own in this creative engineering activity.

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

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

Find out whether a longer airplane will fly farther or a wider paper airplane.

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

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

This science fair project idea investigates whether plants can survive being frozen.