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

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

Does your child always demand to know why the sky is blue, how the sun moves across the sky, or where wind comes from?

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

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.

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

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

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.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

In this project children practice the scientific method while playing with puffy paint.

Discover how and which salt melts ice the quickest.

This science fair project idea examines the reason boats are shaped and engineered.

If your science savy third grader is up for a challenge, let her bend light with a casserole dish!

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

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

This science fair project idea produces sounds by creating vibrations using different objects.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

Deck the halls with last season's Christmas lights for a spectacular and electrifying science activity.

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.