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

Give your budding young observers a chance to discover simple machines at use in their own home.

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.

Kids conduct a simple science experiment to see if seeds can grow without soil in this simple kindergarten science activity.

Using simple materials found around your home, you can reinforce the static electricity concept by helping your child build a simple device with zapping power!

This simple experiment serves as an introduction to the greenhouse effect.

Discover the wonders of simple clay by pressing flowers into a modeling medium!

Introduce your child to the wonders of colorful chemistry with this simple food coloring project.

Engineers in training can get started with this simple wheel-and-axle construction activity.

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

Jazz up your patio or backyard with hip and quirky planters made from simple Mason jars.

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

A simple science experiment exploring the physics of water pressure that's been amazing people since Medieval times.

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

Teach your preschooler some physics that she can relate to with this fun and simple activity!

Learn how matter transmits sound with a simple, hands-on experiment using sand, water and air.

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

Help your kindergarten scientist understand the concept of surface tension with this simple science experiment.

Help young learners discover why catÃs eyes glow in the dark with this simple experiment

Show your child how to concoct a simple duo of household ingredients that changes color as acids and bases are added!

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