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Teach your child how to make an all-natural, yellow-brown dye, using just walnut shells and water. This deep dye can be used on textiles, art, and wood.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

This science fair project teaches students about wilting and browning of salad greens.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

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

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

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

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

Discover flight initiation distance as you play around in the park with this fun bird watching project!

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

This science fair project idea examines whether boys and girls differ in reflexes.

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

Try this chemistry experiment with your curious kid and get some "shocking" results!

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

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

This science fair project idea produces varying pitches of sound.