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.

Demonstrate and describe acid-base reactions of baking soda and baking powder by making pancakes.

The goal of this middle school science fair project is to examine the effect of caffeine on plant growth.

This science fair project idea examines the reason boats are shaped and engineered.

In this science fair project caffeine will be extracted from Gunpowder Green Tea, illustrating the isolation of a naturally occurring product from a plant.

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

This science fair project idea investigates if webbed feet help a duck (and others) swim.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.

Science fair project which tests which antacids are most potent by measuring how well they neutralize the acid in lemon juice.

Help kids tap into their inner inventor by teaching them how to make peanut butter through trial, error, and lots of taste testing!

Science fair project that demonstrates how stalagmites and stalactites are formed.

Science fair project that determines the relationship between the temperature and the rate of cricket chirping. How many times do crickets chirp each minute?

Help your middle schooler improve his observation skills by playing this simple observation and spatial memorization game.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

Examine the presence of seeds in open fields. Collect seeds on socks by walking through open fields of grass or other growth. Germinate seeds on socks

Science fair project that examines the relationship between the size of a bubble and how quickly it falls. What is the correlation?

Science fair project that determines whether spreading a moss soup over an area increases moss growth.

The purpose of this science fair project is to learn which substance best preserves apples. Learn about enzyme interactions in fruit and scientific processes.

Science fair project that tests the effects of diluted soap on the size of bubbles blown from the solution. Will dilution cause smaller bubbles?

Science fair project that uses iodine solution to demonstrate how starch is turned into sugar when it is chewed in the mouth.

Determine how salinity affects the circulation of warm and cold water. Note whether the warm water mixes or forms a layer with cold water.

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

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

Create a colorful, informative display that illustrates the properties of blood cells. Prepare slides using samples of fresh raw beef or chicken bone marrow.

In almost every preschool classroom is a sensory table. Learn how to make one at home!

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

Learn about how sugar fermentation and growing yeast in this easy science project! Yeast is a eukaryotic microbe that puts the fun in fungus!

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

In this cool elementary school science fair project idea make a model to learn what happens to the Earth's surface when ice moves over land.