This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

Thoroughly research image search engines. Consider possible improvements for visual search engines. Help design better image-matching engines.

In this science experiment, test the pH of soil surrounding a gas station to determine if gas stations have a negative effect on the environment.

This science fair project examines the vein structure (venation) of leaves in order to determine the class of the plant sample.

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

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.

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

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

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

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.

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

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?

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.

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

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.

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.

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.

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

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.

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.