Scholastic
Scholastic: Study Jams! Science: Force and Motion: Simple Machines
A slideshow and a short quiz on simple machines and how they reduce the amount of work or effort needed to complete a task.
Science Buddies
Science Buddies: Give Yourself a Lift: Lightening the Load With Pulleys
Before the Industrial Age, people relied on muscle power for moving and lifting heavy objects. Here's a project that shows you how you can use your head to make heavy lifting easier on your muscles - and your back.
Scholastic
Scholastic: Dirtmeister's Science Reporters: Simple Machines: Pulley
With-it explanation of how the pulley works, where it's found. Most interesting, as Scholastic material usually is.
Khan Academy
Khan Academy: Simple Machines and How to Use This Tutorial
There are six simple machines. They are as follows: lever, wheel, pulley, incline plane, wedge, and screw. This tutorial will cover the first three.
Soft Schools
Soft Schools: Simple Machines
Identify the six simple machines by dragging the correct term, and dropping it onto the associated simple machine.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Atwood Machine in Fluid Model
Simulation of an Atwood machine where two masses of varying densities are suspended in water using a pulley system. Adjust the densities of the masses, their positions and the water level to see how the changing gravitational, buoyant,...
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Simple Machines
Good combination of teacher demonstration and student interaction for this simple machine lesson. Great for talking about force and work. Plans are for grades 2-4, yet are adaptable.
![Southwest Educational Development Laboratory: Simple Machines [Pdf] Lesson Plan](https://static.lp.lexp.cloud/images/attachment_defaults/resource/large/FPO-knovation.png "Southwest Educational Development Laboratory: Simple Machines [Pdf] Lesson Plan")
SEDL
Southwest Educational Development Laboratory: Simple Machines [Pdf]
This large PDF file contains seven lessons on simple machines. Includes illustrations. Requires Adobe Reader.