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Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

Design a survival kit. Brainstorm various survival scenarios. Address basic human requirements and natural resources. Describe each tool as well uses.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

Demonstrate how to tell the age of an egg without having to crack it open.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

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

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

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.

In this science project, young children observe, record, and create collections of colors in their world and increase their powers of observation.

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

In this project children practice the scientific method while playing with puffy paint.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

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.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.