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The purpose of this science project is to investigate which will grow larger plants: compost, soil and Miracle - Gro, a mixture of both.

The project researches how lubricants affect the mechanical advantage of a pulley.

In this experiment you simulate radioactive decay in order to gain an understanding of the basics of half-life.

Try this simple activity with your middle schooler to help him develop an understanding of why scientific classification systems exist and how they work.

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

This science fair project idea determines which method of hand cleansing is the most effective.

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

This experiment will explore the possibility of creating an infinite object by hand.

Determine how we can separate the components of a solution

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

This experiment observes inattentional blindness and investigates whether certain age groups or genders are more likely to demonstrate this phenomenon.

This optics-based science fair project idea teaches kids about real and virtual images with a mind-bending candle illusion inspired by Pepper's Ghost.

This science fair project idea discovers whether plants grow best in chemical fertilizer, organic fertilizer, or with no fertilizer at all.

The pinwheel is a simple toy that has been around for years and uses the wonders of the wind to spin it and delight kids of all ages!

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

How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

Discover whether ants are more attracted to natural cane sugar or artificial sweeteners.

Is there any correlation between hot tubs and high blood pressure? Kids discover the answer (and its biological basis) in this cool science fair project.

This science fair project idea determines whether dogs can be trained faster using a food reward or praise.

Free science fair project idea examining how different types of water affect plant germination and growth.

Help your child celebrate the summer and the sun by making a sandy seascape.

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

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

This science fair project idea explores if male or female humans are more likely to exhibit some form of color blindness.