Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

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

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Try this simple activity with your child to guesstimate the age of a tree in your yard and nurture her developing math skills while you're at it!

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

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

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

This science fair project idea determines what household items are good conductors of electricity.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

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.

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

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

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

This science fair project idea produces varying pitches of sound.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

Learn with makes water molecules work with this fun and easy science activity!

In science fair projects, middle school students discover why nitrogen fixing bacteria are important to plant growth.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.