This classic children's game demonstrates how sound travels through air vs. through a solid.

In this project students learn about the golden ratio and investigate if it can be used to predict people's assessment of beauty in others.

Make a periscope with milk cartons and mirrors! This preschool activity is great for playing secret agent and learning simple physics.

The aim of this science fair project is to study the mathematical construct called magic squares and create a unique magic square puzzle.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

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.

Reinforce your child’s understanding of the alphabet by helping them construct all of the letters using pipe cleaners.

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.

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

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.