This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

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

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.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

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.

Find out whether a longer airplane will fly farther or a wider paper airplane.

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.

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

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

This science fair project idea produces varying pitches of sound.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

In this science fair project, students make their own rain gauge to measure rainfall.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

Find out whether putting something on top of a plant will inhibit its growth.

This science fair project idea explores the different properties of matter.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This science fair project idea determines what household items are good conductors of electricity.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

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

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.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

This science fair project will help students learn about non-vascular plants, such as mosses.

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

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