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Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

This science fair project determines which of two chemical agents can be used to release the drug (tea) from hydrogel crystals.

This science project teaches students to classify different shapes of leaves.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

Discover whether cold or hot water from the faucet will boil faster on the stove.

Determine the effect of reading aloud on memory skills. Prepare a list of randomly chosen words, ask volunteers to recall as many as possible from the list.

Science fair project that designs a video game that requires players to use relevant skills.

The goal of this science fair project is to identify the galactic center of the milky way using globular clusters, as found through Google Earth.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

This simple activity is not only fun, it's also a useful way to organize children's closets — and offer kids some autonomy to boot.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

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

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

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.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

In this science fair project, students will use methylene blue to study the presence of aerobic bacteria in milk.

This science fair project idea explores whether white light can be separated into different colors.

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.

Boost your preschooler's attention to detail by getting her to explore the differences between two different pumpkins: large and small.

This experiment evaluates how much influence an enticing package has on childrensâ willingness to try a new snack.

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.

Science fair project that builds a magnetometer and demonstrate its uses.

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

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

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

Check out this fun science project idea to get a better understanding of unstable isotopes and the process of radioactive decay of isotopes through modeling.