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This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

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

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

In this design challenge, your child will make a bottle rocket using typical household items.

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

Have your child kick off their summer vacation by making a miniature water slide!

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

This project examines whether playing music during class helps students learn or if it distracts students from learning.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Make a spring collage with your child to get them outside and those creative juices flowing!

There are hundreds of properties in rocks which you can describe, so get your geology goggles on and get ready to rock your child's science skills.

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!

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

In this design challenge, your child will create a parachute for a small toy using typical household items.

In this cool catalase and hydrogen peroxide experiment, kids put a potato in a jar of hydrogen peroxide to see how catalase acts as an enzyme.

In this fun activity, your child will create their very own solar oven to bake s'mores!

Turn the common pastime of constructing paper airplanes into a lesson on the physics of aerodynamics and flight with this fun science activity.

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.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

This science fair project idea examines the reason boats are shaped and engineered.

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

In celebration of Earth Day, help your fifth grader write a poem from the Earth to its inhabitants.

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.