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Utah Education Network
Uen: Catapult Creations
Third graders learn how a catapult works and build their own.
Scholastic
Scholastic: Dirtmeister's Science Reporters: The Lever
This site provides a description of the lever and its many uses.
Scholastic
Scholastic: Dirtmeister's Science Lab: Levers
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.
Ohio University
Haptic Augmented Simple Machines: The Lever
An explanation of the three types of levers, with examples of each. The formula for the law of equilibrium is also demonstrated.
Science Education Resource Center at Carleton College
Serc: First Class Levers
Through observation and inquiry, students are given various objects to investigate how levers work and why they might be useful.
Science Education Resource Center at Carleton College
Serc: Levers:relationship of Force of Effort & Resistance Fulcrum Placement
Young scholars 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...
Science Education Resource Center at Carleton College
Serc: Levers: How the Human Body Uses Them to Its Advantage
Young scholars 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...
Ohio State University
Ohio State Univ.: Simple Machines & Mechanical Advantage [Pdf]
This site details how simple machines create a mechanical advantage for humans. Levers, theoretical mechanical advantage, actual mechanical advantage, and pulley systems are discussed.
TED Talks
Ted: Ted Ed: The Mighty Mathematics of the Lever
Andy Peterson and Zack Patterson use the seesaw to illustrate the amazing implications and uses of the lever. [4:45]
PBS
Pbs: Nova: Lever an Obelisk
Help lift this Obelisk monument by designing a lever to do the job as efficiently as possible.
Center of Science and Industry
Cosi Columbus: Weight for It!
Science experiment that demonstrates how balances work. Includes full list of materials, procedures, and scientific explanation of how to compare the weight of different objects.
Sophia Learning
Sophia: Simple Machines: Levers: Lesson 3
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."
Other
D&t Online: Levers
This site illustrates different classes of levers that are used in simple machines.
CK-12 Foundation
Ck 12: Plix: Boyle's Law: Lever
[Free Registration/Login Required] With the given shapes and labels, construct a second-class lever that would help in lifting very heavy items.
CK-12 Foundation
Ck 12: Physical Science: Lever
[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.
Sophia Learning
Sophia: Levers & Work
A video tutorial showing the relationship between levers and work as it relates to mathematics. [4:33]
Science Struck
Science Struck: Simple Machine: Levers
Explains what a lever is, its history, how it works, the formula for calculating its mechanical advantage, classes of levers, and uses of levers.
Other
Manhattan Beach Unified School District: Levers and Other Simple Machines
Learn about levers and make the connection between these simple machines and the human body.
Integrated Publishing
Integrated Publishing: Force and Mechanical Advantage
Explains the relationship between force and mechanical advantage with diagrams, examples and calculations.
Integrated Publishing
Integrated Publishing: Levers
A quite lengthy chapter on the simple machine the lever. Includes uses, classes, mechanical advantage, formulae, etc. A full discussion, with good illustrations.
Maryland Science Center
Maryland Science Center: March Madness Finger Basketball [Pdf]
Build a miniature basketball court, and use a spoon lever to shoot balls into the basket. Experiment with different materials to see which one works the best.
Alabama Learning Exchange
Alex: Levers Weight Lifters
During this lesson, young scholars will have the opportunity to explore levers through hands-on experiences and by navigating the Internet. This lesson allows students to use their experiences to determine how levers and other simple...
Khan Academy
Khan Academy: The Forearm as an Example of a Third Class Lever
This is a five-question quiz related to the passage "The Forearm as an Example of a Third-class Lever."
My Science Site
Experiments With Levers [Pdf]
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...