Examine the connection between temperature and chemiluminescence.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

This project compares test subjects' responses to whining and other "attachment" and attention-getting sounds to determine which sounds are most distracting.

This science fair project idea determines the most effective method of preserving food.

Explore the properties of light and color using photographic filters. Take pictures of color spectrum, compare results of different filters.

Science fair project which measures the amount of heat energy released by a burning candle by calculating how many calories of heat it emits.

Ethanol can be used as an alternative fuel! The purpose of this experiment is to identify a starch plant that produces the largest quantity of ethanol.

Science fair project that examines how light wavelengths affect photosynthesis in the aquatic plant: Elodea.

Science fair project in which you will build your own algae photobioreactor which will meet the physiological requirements of algae for maximum growth.

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

This optics-based science fair project idea teaches kids about real and virtual images with a mind-bending candle illusion inspired by Pepper's Ghost.

This project examines various algorithms to determine the ideal algorithm for a strategy game.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

Science fair project in which you will create your electricity by making a homemade battery using salt water, a nail, and a copper wire.

Use this fun activity to make an optical illusion picture that helps your kindergartener explore the sense of sight, and sharpen his observation skills!

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

Discover whether eating certain foods will make you smell (not only bad breath) but through skin cells.

Science fair project which examines how stopping a tomato's ripening process using the enzyme ethylene effects the tomato plant and its reproduction cycle.

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

This science fair project idea explores if male or female humans are more likely to exhibit some form of color blindness.

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

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

Construct a model of radioactive decay. Learn more about radioactive decay by modeling the process using coin flips.

Learn about the growing app design field by designing a new or improved app for smartphones.

This science fair project teaches students the differences between fruits and vegetables.

This experiment will explore how manipulating a graph of historical information might reveal new information about data.

This science fair project idea explores whether dogs do look like their owners.