Construct batteries that make electricity from fruits with this fun science fair project.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

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

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

Science fair project which determines whether it is numerically possible to be connected to every person on the earth within six degrees of separation.

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

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

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics 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?

Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.

Construct and experiment with a periscope using reflected light rays to gather an image.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

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

This science fair project idea explores how far the âdanger zoneâ is from different types of caution signs.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

Challenge your learner to design and build a city of their own in this creative engineering activity.

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

Are you looking for an out-of-this world activity that's both fun and educational? This solar system garland is a great way to introduce your child to astronomy.

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

Learn about Ikebana, or the Japanese art of flower arranging, with your child while artfully arranging spring flowers!

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

In this plant habitats activity, children play the role of an ecologist and take surveys of different areas to discover the best habitat for dandelions.

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