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This science fair project idea investigates whether rocks containing geodes can be determined from the outside.

Choose a timeline to live without technology. Keep a journal of all the issues encountered. What are the benefits and cons of modern technology?

This science fair project idea explores how length affects the weight a bridge can hold.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

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.

The goal of this middle school science fair project is to examine the effect of caffeine on plant growth.

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.

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 examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Which battery lasts the longest? In this science fair project, kids will test popular brand name batteries like Duracell and Energizer against generic brands.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

This science experiment tests if dog saliva can really help heal wounds.

Formulate a hypothesis and use the scientific method to determine the guess what is hidden in a box. Test abilities of volunteers, without opening box.

This science fair project idea focuses on saturated and unsaturated lipids (fats and oils).

Science fair project which determines whether it is numerically possible to be connected to every person on the earth within six degrees of separation.

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

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.

Science fair project that examines the physical features of elephants and butterflies and draws conclusions about their similarities.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

This science fair project idea explores the different properties & interactions of sugar molecules.

This project examines the concentration of dissolved oxygen in water, with and without oil.

This optics-based science fair project idea teaches kids about real and virtual images with a mind-bending candle illusion inspired by Pepper's Ghost.

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

Observe trends in the properties of writing materials over past 5000 years and extrapolate to future time. Prepare a table that compares writing material.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

This research project teaches students about synesthesia, a neurological condition that causes sensory overlap.

The aim of this science fair project is to examine the differences between brands of bottled water and analyze consumer preferences through a taste test.