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Science fair project that evaluates how well clothing fabrics block UV radiation by examining the properties of different fabrics.

How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

This science fair project idea explores discover whether there are any patterns or trends in the memories between different genders.

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

The objective of this science fair project is to determine the rate at which participants can respond to different patterns.

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

Use dirt and different colors of craft sand to make unique layers in a clear plastic cup to represent the layers of the Earth.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

Determine if certain colors of light are more effective for photosynthesis. Plant seeds in cardboard boxes with different light, record visible growth.

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

The goal of this science fair project was to examine how different angles of decline affect the tipping point of a vehicle.

Learn about different fern fronds with your third grader as you create lacy, natural decorations on your Easter eggs this year.

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

Investigate the different ways in which objects and organisms can be classified, create your own. then have volunteers classify using their own systems.

Fudge is one of very few desserts people make at home that is actually crystalline. What happens when the fudge crystallizes at different temperatures?

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

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

This project explores whether there is an effect on people, including heart rate and self-expressed mood, when they are exposed to different types of music.

Study how liquids separate into layers by creating a liquid gradient, different density liquids separate into layers in a graduated cylinder.

This science fair project idea teaches about the size of two different systems: the solar system and an atomic system.

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

In this plant habitats activity, children play the role of an ecologist and take surveys of different areas to discover the best habitat for dandelions.

This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

Store seeds under three different environmental conditions. Plant seeds in carefully marked groups, watch them grow. Compare results.

Boost your preschooler's attention to detail by getting her to explore the differences between two different pumpkins: large and small.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

Satisfy your kindergartener's fascination of different sounds with this easy science project, where they'll use their ears instead of their eyes to identify sounds!