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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.

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

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!

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

This biodiversity project examines the biodiversity in your own backyard.

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

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

Science fair project determines relationship between number and variety of insects and spiders by collecting and counting invertebrates in a ecosystem.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

How do organic materials become soil? This science experiment measures what materials biodegrade.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

This science fair project idea examines which type of insulation holds in the most heat.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

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

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

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

Take a dive into the candy jar with this yummy science experiment.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.