Observe which kind of fresh long-stemmed flower will last the longest after being picked.

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

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.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

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.

A project to reinforce learning about the layers of the rainforest, rain forest ecosystem, and the greenhouse effect.

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

Kids build a rainforest food web to explore trophic levels in this cool science fair project for 4th grade.

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.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

This science project is to discover which Black Walnut tree tissue contains the most concentrated amount of Juglone, a substance that works like an herbicide.

This science fair project examines how seeds hitchhike on animals and clothing.

Science fair project that tests whether cats have a preference for organic food.

Create an organic plastic product using vinegar and cream. Track decomposition over course of several weeks. Compare decomposition with traditional plastics.

Study the impact of environment on seed germination among three materials: soil, paper towel, and cloth. Note when seeds germinate and how well they germinate

Explore the role of starches as thickening agents in food, and learn about the chemical properties of starch in the process.

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

This science fair project idea compares biodiversity between drops of water.

This science fair project idea explores what it takes to create a biosphere, or a self-sustaining ecosystem.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

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

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

This science fair project idea quantifies growth of seedlings at various pH levels.

Looking for a project on fossils? Check out this fun science fair project idea to understand the process of coal formation and fossils part in that formation.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

Protozoa and ciliate and amoeba, oh my! The objective of this science fair project is for students to use a microscope and identify microscopic life.

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