In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

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

This classic children's game demonstrates how sound travels through air vs. through a solid.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

In this science fair project, students create their own miniature salt flats at home.

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

This science fair project idea investigates whether air has mass and weight.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

In this science fair project, students make their own rain gauge to measure rainfall.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

In this experiment, students will discover how heat and pressure turn clay into slate, phyllite, and finally schist.

This science fair project idea studies which brand of wintergreen candy produces the most sparks in the dark.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

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

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

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!

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

This science fair project teaches students about wilting and browning of salad greens.

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

This science fair project idea researches the definition of ‘biodegradable’ and explores this in a real-life setting.

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