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 Bernoulli's Principle experiment, you'll learn how an increase in the speed of a fluid, like air, decreases pressure.

Check out this mind-blowing experiment in which a hard-boiled egg will fit through an impossibly small opening with the help of only a few matches!

Slip some science into storm watching with a homemade rain gauge!

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

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.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

Demonstrate how to tell the age of an egg without having to crack it open.

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

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

Put your young paleontologist's puzzle-solving skills to the test by having her hunt for dinosaur bones and then assemble them to create dinosaur skeletons.

Turn an abstract lesson into a practical craft with the fun and colorful creation of dough earth layers!

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

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

This science fair project idea explores whether cats can be trained in the same way that dogs can.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

Combine your child's natural curiosity with his developing classification and writing skills by helping him create a backyard field guide.

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

On the next chilly, winter day, invite your fifth grader to make a hand warmer by experimenting with the loaded combination of a few natural ingredients.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

This fun activity makes use of pasta shells, paint, and glue make a crab while your child learns about this unique creature.

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.

It's a rare kid who doesn't like a sandbox. Next time you're out digging, build in some earth science, too.

Your child can help your family pet take a breather, and help herself relax, too, with this soothing activity.

Test whether plants can grow without sunlight and water.

This kindergarten science activity will help her explore the changing states of matter which transform an egg from raw to soft to hard-boiled.

This science fair project idea determines what household items are good conductors of electricity.