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 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 demonstrates the principles of reflection through simple experiments involving mirrors and light.

In this science fair project you will make a model of a cell membrane using very simple material.

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

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 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 simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

This science fair project idea explores alcoholic fermentation at work by making your own soda.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

This science fair project idea identifies trees using a dichotomous key.

This science fair project idea determines what household items are good conductors of electricity.

In this project, waves of vibrations are experimented with using water in glasses.

This science fair project idea determines what household items are good conductors of electricity.

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

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

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

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

How do organic materials become soil? This science experiment measures what materials biodegrade.

Examine the effect of pressure on carbonation in soda.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.