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.

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

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 activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

This science fair project idea determines if the temperature of rubber effects how high it bounces.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

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.

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 and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

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

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

In this activity, students will create a stop motion animation by creating a clay figure and taking a series of digital photographs.

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

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

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

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

Find out which kind of bubble wrap fares best when put in impact.

In this science fair project, students make their own rain gauge to measure rainfall.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

This science fair project idea produces varying pitches of sound.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

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.