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Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot move in a pattern related to the sound and rhythm of music.

In this activity, students will think about the form and function of household objects as they compare and contrast kitchen serving spoons of various sizes and designs.

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

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

In this activity, students will create a stop motion animation by creating a clay figure and taking a series of digital photographs.

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

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

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

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

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.

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

Make a seed bomb and let your junior guerilla gardener spread flowers far and wide.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

Help your child learn about animal classification with this fun and delicious activity.