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Learn about the greenhouse effect- and get great science fair experiment ideas. Read more.

Study and categorize the functions and types of genes. Run gene experiments chosen from links. Analyze data, explain ideas in a detailed report.

This science project challenges students to take learned information about weather and climate control and apply it to come up with creative ideas of their own.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

Kids learn about Brownian motion, diffusion, and how temperature is a key factor affecting the rate of diffusion in this cool science project.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Dinosaurs were huge creatures that left behind huge footprints that lasted for millions of years. In this science fair project, kids learn how dinosaur tracks were left behind!

Learn how the focal length of a lens affects a magnifying glass's magnifying power in this cool science fair project idea for 8th grade.

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 science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

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

Science fair project idea examines what is remembered from high school education. Formulate and administer high school curriculum tests to adults over 21.

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.

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

Do you hate to waste energy? In this experiment, you will design a machine that is powered by the process known as energy transformation.

Explore the relationship between personality traits and birth order effects.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

This project involves the development of a website using free software online to promote the value of science.

Design an improvement for an existing website. Program improved feature, get website owner to implemement new design.

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

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

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.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

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.