This science fair project idea determines which colors are more difficult to read at a distance.

Get a cool science fair project idea for middle schoolers on the effect of adding sugar to the growth of green plants.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

Science fair project that compares tap water and bottled water for the presence of common impurities.

Science fair project that measures the relative times it takes a plastic bag and a biodegradable plastic bag to decompose.

Research optical illusions and human auras. Understand why the probable cause of perception is mach bands.

Demonstrate the principle of jet propulsion in this science fair project by building a rocket from household materials.

This project examines the vulnerability of fruit flies, Drosophila melanigaster, to irradiation. Will exposure result in mutations?

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

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

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

Use pepper and soap to discover some fun facts about the properties of water.

Science fair project which examines the chemical reaction of a candle flame with various gases in order to determine the identity of the gas.

The purpose of this science project is to determine which stimulus, gravity or water, will cause the greatest growth response in a plant.

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.

Demonstrate the capillary function in plants by adding food coloring to glasses of water. Slice stalks of celery and leafy tops. Compare color of leaves

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

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

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

Plant sunflower seeds , measure height, calculate average height, compare size and weight of heads. Interpret findings in detailed report.

This science fair project idea teaches to understand and explore the concepts of crystal formation and dissolving substances.

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

Compare air temperature with the infrared temperature from a reflecting surface at different times of the day, in shade and in sunlight.

Science fair project that determines the correlation between the ability of selected materials to conduct heat and a material's density.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.