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In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

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

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

This science fair project idea produces varying pitches of sound.

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

This science fair project idea determines if the color of light affects the growth of plants.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

This science fair project idea experiments with spinning color wheels and optical illusions.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

This science fair project idea examines whether boys and girls differ in reflexes.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

This science fair project idea investigates how magnetism can defy the force of gravity.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

This science fair project idea investigates the difference in reaction times between boys and girls.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

This science fair project idea investigates whether plants can survive being frozen.

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

Take a dive into the candy jar with this yummy science experiment.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

This science fair project idea explores substances that cause a bubble to last longer.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.