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

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

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

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

Kids conduct a simple birdseed experiment to figure out what kinds of birds live nearby in this fun science activity.

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.

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

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.”

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.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

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 science fair project idea identifies trees using a dichotomous key.

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

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

In this project students experiment with making music using only glasses of water.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

Find out whether matte or shiny nail polish lasts longer.

Construct and experiment with a periscope using reflected light rays to gather an image.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

Examine the effect of pressure on carbonation in soda.

This tricky building block challenge asks your learner to think creatively. They will work on their divergent thinking skills as they try to fill up an index card perfectly with building bricks.

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

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

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.