Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

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.

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

Science fair project that examines condensation and the conditions needed in order for dew to form.

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

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

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.

Hold a magnet marathon! Explore the power of magnets with your kindergartener in this entertaining and simple science game.

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

Help kids tap into their inner inventor by teaching them how to make peanut butter through trial, error, and lots of taste testing!

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

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

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

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

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

What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

Test whether plants can grow without sunlight and water.

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

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

This science fair project examines how seeds hitchhike on animals and clothing.

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