Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

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

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

Test whether plants can grow without sunlight and water.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

Discover how and which salt melts ice the quickest.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.