This lesson will introduce the three types of levers and show how to calculate the mechanical advantage of each. It is 3 of 3 in the series titled "Simple Machines: Levers."

This site illustrates different classes of levers that are used in simple machines.

Learn about levers and make the connection between these simple machines and the human body.

[Free Registration/Login may be required to access all resource tools.] Definition of a lever and the three different classes, and how each one changes force.

This site provides a description of the lever and its many uses.

Step into Dirtmeister's Science Lab and help him answer the challenge question: "How can you lift four times your weight?" Learn about levers, make your predictions and then do the experiment.

This is a five-question quiz related to the passage "The Forearm as an Example of a Third-class Lever."

A video tutorial showing the relationship between levers and work as it relates to mathematics. [4:33]

Students will apply the concept of levers to the human body and build all three classes of levers within a musculoskeletal context. They will be shown how the musculoskeletal system is a system of levers and one example of each type of...

A quite lengthy chapter on the simple machine the lever. Includes uses, classes, mechanical advantage, formulae, etc. A full discussion, with good illustrations.

Students investigate the relationship between the two forces and the location of the fulcrum in a first class lever. Students work in cooperative groups of approximately three to make observations that they can then generate a formula...

Through observation and inquiry, students are given various objects to investigate how levers work and why they might be useful.

Help lift this Obelisk monument by designing a lever to do the job as efficiently as possible.

[Free Registration/Login Required] With the given shapes and labels, construct a second-class lever that would help in lifting very heavy items.

Wikipedia offers excellent information on levers, including a hyperlinked table of contents, images, and examples.

Step-by-step illustrated instructions for an experiment investigating how a lever works. An explanation of the science involved is given at the end.

This lesson will introduce the three types of levers and show how to calculate the mechanical advantage of each. It is 2 of 3 in the series titled "Simple Machines: Levers."

This lesson introduces the concept of a lever arm.

[Free Registration/Login Required] Drag the labels to identify the different parts of the wheelbarrow as parts in a lever.

[Free Registration/Login Required] Drag the labeled triangles to indicate where the fulcrum of this third-class lever is as well as the input and output forces.

This resource details a cooperative learning activity on experimenting with levers. Offers eight different tests students can engage in. A student data sheet is also provided for students to record their findings. This resource is in PDF...

This lesson introduces the concept of levers.

This lesson provides the learner with examples on determining the work done to or by a lever.

This lesson explains how levers can be applied to more complex machines.