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In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

This basketball project explores the best way to make the perfect shot every time.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

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

This project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

This science fair project idea investigates the difference in reaction times between boys and girls.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.