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.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

In this science fair project, students use hot and cold water to simulate what happens when a warm front meets a cold one.

A great science fair project on solar oven design that helps kids learn about solar power and solar heating.

Check out this cool science fair project idea to explore non-chemical means of preserving fruits by using thermotherapy.

Science fair project that identifies the nature of ionic and covalent bonds and determines how ionic and covalent compounds differ.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

Science fair project that determines the correlation between the ability of selected materials to conduct heat and a material's density.

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

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

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

This science fair project idea focuses on two classes of sugars monosaccharides (fructose) and disaccharides (sucrose or table sugar).

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

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

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

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.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Kids love the dramatic Mentos and Diet Coke experiment conducted in this awesome science fair project.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

This science fair project idea teaches about the size of two different systems: the solar system and an atomic system.

Science fair project that examines how cell membranes allow the inward and outward flow of materials as demonstrated by eggs.

What direction should solar panels face? It's not the direction you might think! This free and enlightening science fair project helps kids discover the answer.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

This science fair project compares the allelopathic chemical produced by the Black Walnut tree to a commercial herbicide in stopping the growth of a shrub.

Science fair project that evaluates how well clothing fabrics block UV radiation by examining the properties of different fabrics.

This science fair project idea determines whether the older population prefers darker, duller colors rather than bright and lush colors.

Science fair project that tests the correlation between outdoor temperature or weather conditions and the number of visible stars at night.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

This science fair project idea discovers whether plants grow best in chemical fertilizer, organic fertilizer, or with no fertilizer at all.