This project compares the strength of one, two, and three-ply toilet paper.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

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

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

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

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

Get your sense of humor ready for this fun science experiment that demonstrates the fundamental physics of air pressure.

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

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

Stir up some enthusiasm for experimentation with this candy-cracking science experiment!

Cleaning can be a chore, but not with this sudsy experiment!

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

This science fair project idea explores substances that cause a bubble to last longer.

In this project students experiment with making music using only glasses of water.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

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

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."

In this experiment we will be determining whether birds prefer certain colors of seed.

Invite your third grader to do taste test science to observe how a strawberry tastes when it is paired with various condiments. The results may be surprising!

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

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

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