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 fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

Science fair project that teaches you key definitions of molecular science, and how different isotopes of an element affect the relative atomic mass.

Science fair project that demonstrates the different phases of the moon by physically representing them with construction paper and a shoebox

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

Kids will love making clouds and learning how to make a water cycle model in this fun science fair project idea that explores evaporation and precipitation.

2011 VIRTUAL SCIENCE FAIR ENTRY: The objective of this science fair project is to develop a microcontroller and circuit that can conduct electricity.

Science fair project which determines whether your current calorie intake will cause you to lose or gain weight over time.

In this challenge, students are tasked with creating a car that can be powered by a balloon!

Check out this cool science fair project idea to explore the relation between onions and eyes and how to prevent eyes from tearing while cutting an onion.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

Science fair project that examines the biodiversity of ant populations in various locations.

Science fair project that studies how perfumes are made in order to determine how we can capture a scent.

This science fair project idea tests the efficiency of short term memory.

Explore the relationship between personality traits and birth order effects.

Is there any correlation between hot tubs and high blood pressure? Kids discover the answer (and its biological basis) in this cool science fair project.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

Explore concepts in current and coltage with these Van de Graaff generator experiments.

Get this cool middle school science fair project idea on how to conduct a flame test to detect the presence of certain metals in chemical compounds.

Check out this cool science fair project idea to explore various aspects of projectile motions like mass, angle and distance.

Easy and cool middle school science fair project on ripening process of fruits and measures you can take to prevent fruits from rotting and delay ripening.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

Determine which factors promote the greatest memory interference. Administer test, time how long it takes subjects to complete different tasks.

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

The objective of this science project is to investigate patterns in fingerprints among family members.

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?