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.

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.

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

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

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.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.

People have favorite flavors, but what about ants? Which ant food is the most popular?

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

This science fair project idea determines the most effective method of preserving food.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

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.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

This science fair project idea investigates if fats add to the flavor of food.

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.

In this project, several food items are tested to determine whether they contain starch.

This science fair project idea observes products available in the school cafeteria and waste produced by these products.

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