Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

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

In this project, a model of a submarine is built to simulate the buoyancy and displacement of water and air.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

Challenge your learner to design and build a city of their own in this creative engineering activity.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

This science fair project idea identifies the properties of soap bubbles and invents a new or improved bubble solution.

This science project teaches students to classify different shapes of leaves.

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

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

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Compare animal and plant fats and observe, and record, and draw conclusions about their similarities and differences.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

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

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

This science fair project idea researches the definition of ‘biodegradable’ and explores this in a real-life setting.

Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

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

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

This science fair project idea explores substances that cause a bubble to last longer.

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

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

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.

This science fair project idea observes products available in the school cafeteria and waste produced by these products.