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Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.

Compare the ignition rates of various types of flame-retardant materials.

Find out whether packaged seeds actually do expire in this new science fair project idea.

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

This super fun science project, perfect for young children, combines crafts, dressing up as animals, outdoor play, and life science learning.

This experiment demonstrates the conservation and transfer of energy using a marble rolling over sandpaper.

This science fair project idea investigates the relationship between memory and age.

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

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

Find out which part of a flame burns wood the fastest and also if this is true for all types of flames such as candle-flame, burners, and lighters.

This science project challenges students to study the salt content in tap water and learn about electrochemistry.

Find out whether matte or shiny nail polish lasts longer.

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

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 determines whether the types of plants growing in a Pacific Northwest rain forest environment are influenced by the soil acidity.

In this project students determine which instruments composers use to create birdsongs and birdcalls in classical music.

Save money by making compost! Use this science fair project idea to determine which composting methods best encourage decomposition of organic matter.

This project examines the concentration of dissolved oxygen in water, with and without oil.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

This science fair experiment organizes made-up elements to simulate Mendeleev when he made the periodic table of elements.

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.

This project is about after-images and what possibly affects them.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

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.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

Cleaning can be a chore, but not with this sudsy experiment!

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

Test your friends to find out if you can replicate the placebo effect's incredible results.

Learn about the effect of artificial light on plant growth versus natural sunlight and delve into some biology and botany concepts in this science project.