Check out this cool science fair project on identifying rocks and minerals for kids.

Learn about the Atwood Machine and Newton's 2nd Law with a pulley and masses of different weights in this physics science project.

Let your second grader pay homage to an ancient Olympic tradition with this modern day Olympic wreath!

This project compares different liquids and the freezing, melting and boiling points of liquids.

This experiment investigates whether font choice affects peoplesâ ability to remember the information that they read.

This science fair project idea investigates how the shape of an object affects drag.

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

How do organic materials become soil? This science experiment measures what materials biodegrade.

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

Determine which video game elevates the heart rate best and burns the most calories.

In this hands-on activity, kids learn what it takes to foster seedlings into full-grown plants, all in a regular old soda bottle!

Science fair project that demonstrates the process known as refraction, which allows glasses and contact lenses to help people with poor vision.

Science fair project that measure winds speed, temperature, and time of day in order to determine the origins of the wind.

Study science with your first grader in this arts and crafts activity that models the reason why fall leaves change color with some paint and crayons.

Make an edible play dough with your child to help her develop her sensory and motor skills.

Introduce your child to preliminary science concepts by challenging them to do this fun and simple cloud observation activity.

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

Do you hate to waste energy? In this experiment, you will design a machine that is powered by the process known as energy transformation.

This experiment will explore if a randomly iterated algorithm will result in a pattern.

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

Free science fair project idea that examines the impact of gravity on a dropped carton of eggs. Design a device to protect the eggs from cracking.

Store bowls of fresh fruit in differently lighted environments. Contrast freshness based on appearance.

Determine the growth rates of different types of human hair. Ask volunteers to not cut their hair until the end of experiment. Measure hair length.

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

Design and build a balloon rocket from an existing design. Think of the ways in which existing designs can be improved, new practical applications

Let your kid experiment with textures among fabric and other materials that are smooth, rough, soft, or slippery—and then they'll make a texture book!

How do people move pianos and heavy furniture into tall buildings? Show your kids some pulley potential with this simple household exercise!

Time to look at our faces! Are they symmetrical or asymmetrical? Find out in this science fair project idea.

This project explores the effectiveness of various common household ingredients in cleaning tarnished and oxidized coins.