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.

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this 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?

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Your kid will be captivated as she watches liquids change color before her very eyes during this fun science project that introduces some chemistry basics.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

The next time you and your fifth grader go on a hike, take along this key to figure out which common North American animal left a track along the river bank.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

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.

This kindergarten science activity will help her explore the changing states of matter which transform an egg from raw to soft to hard-boiled.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

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

This science fair project idea determines if the temperature of rubber effects how high it bounces.

Science fair project that determines whether mass and weight are the same or different.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.