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How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

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.

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

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

Cleaning can be a chore, but not with this sudsy experiment!

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

Slip some science into storm watching with a homemade rain gauge!

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

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

In this design challenge, your child will make a bottle rocket using typical household items.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Making your own glass cleaner is easy, effective and inexpensive!

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

This science experiment tests if dog saliva can really help heal wounds.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

Using a toy race car kids create a visual model of the Doppler Effect.

This science fair project idea determines the most effective method of preserving food.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

Determine if gender affects the ability to identify different smells.

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

This science fair project idea investigates the difference in reaction times between boys and girls.