Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

In this activity, your child will be challenged to build a tall tower out of building bricks! The instructions include questions prompts to guide students through the design challenge.

This science fair project idea explores how length affects the weight a bridge can hold.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

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

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

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

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

The project investigates how water and movement affects erosion.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

This project determines what category of person is most likely to be ticklish.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

This science fair project will help students learn about non-vascular plants, such as mosses.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.