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

Looking for a project on machines? Get a fun elementary school science fair project idea to design a compound machine using your knowledge of simple machines.

This fun elementary school science fair project idea helps students in designing an amusement park using their knowledge of forces and simple machines.

This cool physics demo illustrates the simple harmonic motion of a pendulum while teaching kids the important concepts of potential and kinetic energy.

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.

Kids learn how to make a simple electric motor in this great engineering science fair project that teaches them how current generates its own magnetic field.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

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.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

Help your middle schooler improve his observation skills by playing this simple observation and spatial memorization game.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

Research and understand basic computer science. Build a simple computer, following instructions found online. Design a new or improved feature.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

Hold a magnet marathon! Explore the power of magnets with your kindergartener in this entertaining and simple science game.

Introduce your child to preliminary science concepts by challenging them to do this fun and simple cloud observation activity.

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

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

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

Make a periscope with milk cartons and mirrors! This preschool activity is great for playing secret agent and learning simple physics.

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

This science fair project will go beyond the simple definition of conservation to explore the different facets of what conservation means.

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.

Gymnosperms are coniferous trees that reproduces using pine cones to spread seeds. Check out this simple pine cone experiment to learn about the process!

This science fair project idea examines whether music has an effect on a person's ability to complete a simple task that requires concentration.

Here's a simple science activity that will help your child better understand how wells bring us water.