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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!

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

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

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

Which battery lasts the longest? In this science fair project, kids will test popular brand name batteries like Duracell and Energizer against generic brands.

Determine the maximum distance traveled by projectiles launched at an angle. Use some cool math to figure out at which angle your projectile will go farthest.

Do heavier objects fall faster than lighter ones? Students learn the answer by watching the effect gravity in a vacuum has on a coin and a feather.

In this science fair project on the relationship between distance and time, kids explore the behavior of gravitational acceleration through direct observation.

High school students recreate Michael Faraday's experiment in this cool science fair project that induces current in a coil of wire.

In this science fair project, students make their own rain gauge to measure rainfall.

This experiment strives to determine if tracking of conservation habits will lead to reductions in a family's electricity and water bills.

This experiment will investigate whether reward or punishment is more apt to motivate people.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

This experiment explores how microwave radiation affects fungi, bacteria, and plant life.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

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

This science fair project idea explores how far the âdanger zoneâ is from different types of caution signs.

This science fair project idea determines the probability of a coin landing heads or tails.

This experiment will explore the best way to create a perfect soft-boiled egg.

This science fair project idea explores whether talking to a plant will help it grow.

This science fair project idea examines how well individuals can remember a story they were told and how accurately they pass that story along.

How does mold grow? Kids find out by testing different conditions to measure mold growth rate and learn about what factors cause mold to grow more quickly.

A project to reinforce learning about the layers of the rainforest, rain forest ecosystem, and the greenhouse effect.

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.

Plants help keep a house cool! This article includes step-by-step instructions for completing this fun and interesting science experiment.

This fun middle school science fair project idea explores the process of respiration and determines whether boys and girls have the same lung capacity.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.