This science project teaches students to classify different shapes of leaves.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

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

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

This science fair project idea examines the reason boats are shaped and engineered.

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.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

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

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

This project determines what category of person is most likely to be ticklish.

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

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

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

In this science fair project, students make their own rain gauge to measure rainfall.

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

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

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

This science fair project idea explores the different properties & interactions of sugar molecules.

This science fair project idea experiments with spinning color wheels and optical illusions.