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

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

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

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

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

This science fair project idea determines which method of hand cleansing is the most effective.

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

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

Deck the halls with last season's Christmas lights for a spectacular and electrifying science activity.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

This science fair project idea investigates whether plants can survive being frozen.

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Learn whether writing things down really makes things easier to remember.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

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

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

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