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The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Learn whether writing things down really makes things easier to remember.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

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.

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

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

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

This science experiment tests if dog saliva can really help heal wounds.

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

Challenge your learner to design and build a city of their own in this creative engineering activity.

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.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

This science fair project idea discovers which brand of bubblegum produces the largest bubbles.

In this science fair project you will make a model of a cell membrane using very simple material.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

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

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

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

This science fair project will help students learn about non-vascular plants, such as mosses.

Discover how and which salt melts ice the quickest.