This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

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.

There is debate about whether chalkboards or whiteboards are better. This experiment explores which leads to better retention of visually-displayed information.

This science fair project idea assesses the effect of music on work performance.

In this science fair project, students will use four different household objects to see which ones form the most or best crystals.

How do crystals form? In this science fair project, students will use three different saturated solutions to see how different minerals form crystals over time.

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

The goal of this fun science experiment is to explore the limitations of sight and learn working of the human eyes.

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

This science fair project idea examines if there is a reason that musical notes are at the pitches they are.

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.

A project to reinforce learning about the layers of the rainforest, rain forest ecosystem, and the greenhouse effect.

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

The objective of this science fair project is to determine whether drawing with the right side or the left side of your brain will produce a better picture.

Use applied math to model orbital eccentricity in this cool science fair project for 7th grade.

This science fair project idea identifies and understands adaptations in birds.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

Science fair project that demonstrates the different phases of the moon by physically representing them with construction paper and a shoebox

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

Use a dichotomous key to identify plants or animals.

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

Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

In this wind tunnel experiment, you'll make a wind tunnel to test lift and airflow on a model plane and explore aerodynamics and the Bernoulli Principle.

Science fair project that compares tree leaf size and shape based on the leaf's position in the tree. Is their is a noticeable difference between high and low?

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

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.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.