This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

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.

In this design challenge, your child will make a bottle rocket using typical household items.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

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.

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.

In this open-ended activity, students will be given a small quantity of three types of materials and asked to design a prototype for “something that will improve the school.”

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.

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.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

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.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

All you need are pencils, paper and some scissors to get started on this easy and fun game to review astronomy information, or other types of study concepts.

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.

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

Science fair project which teaches you how to make your own homemade glue by combing curdled milk with baking soda.