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

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

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

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

The actual factors affecting friction may surprise you! Learn about the coefficient of friction and put some trigonometry into practice in this science project.

In this experiment we will be determining whether birds prefer certain colors of seed.

Study the effect of music on random rote memory. Examine the practical application of music in learning and education.

Create a double-slit interference out of cardboard. Produce an interference pattern that demonstrates the wave and particle characteristics of light.

This science fair project idea raises awareness of a real ecological issue.

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

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.

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.

Research and understand basic computer science. Build a simple computer, following instructions found online. Design a new or improved feature.

Research Earthship buildings. Draft a unique architectural design that repurposes used, discarded radial tires. Build scale model of structure.

Design and build an invention inspired by Rube Goldberg's designs. Build your invention. Test the machine, write a detailed report.

This science fair project idea determines which flower lasts the longest.

This science fair project idea investigates food preference of birds.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

What is a barycenter? Kids learn how gravity and mass influence the orbit of binary systems like planets and moons or stars and planets in this cool experiment.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

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.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

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 determines exactly how much of an effect road grade has upon a cyclistâs speed.