This science fair project idea explores how length affects the weight a bridge can hold.

Make a periscope with milk cartons and mirrors! This preschool activity is great for playing secret agent and learning simple physics.

This science fair project idea explores whether dry ice will cool a beverage faster than wet ice.

This project explores the interaction between air pressure and playing surface in determining a basketballâs bounce.

In this science fair project, students examine how the flow rate in a stream affects the growth of aquatic plants.

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

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

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

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

This cool electricity project teaches kids how connecting batteries in series vs. parallel circuits can contribute to different levels of voltage and amperage.

In this science fair project, students use the streak test to tell minerals apart from each other.

The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

Science fair project that models the subterranean movement of water, using Darcy's Law. How can this information be used in hazardous material spills?

Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

This science fair project compares the abilities of men and women to understand subtle communication through body language.

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

Test whether cutting up meats will make it cook faster than just cooking it whole.

Explore this fun science fair project idea to investigate different microclimates in and around your home and their effects on the plant and animal life.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

Will male or female hair grow faster? Find out in this science fair project idea!

This experiment uses Rosenberg's Self Esteem Scale to evaluate if there is a correlation between family size and self esteem.

Learn the anatomical and physiological differences between central and peripheral visual systems.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

This science fair project idea investigates food preference of birds.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

In this science fair project, students create their own miniature salt flats at home.

Compare the whitening abilities of four different brands of whitening toothpaste to see which one whitens the fastest and which one whitens the most.