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.
Scholastic
Scholastic: Dirtmeister's Science Reporters: Simple Machines: The Wheel and Axle
An in-depth explanation of the wheel and axle from Scholastic. Also provides several examples and a picture for understanding.
Other
Professor Beaker's Learning Lab
This site provides information on simple machines in machines and features links to a question and answer section as well as a learning lab.
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.
NASA
Nasa: Simple Machine Resource Chart
This site provides a chart that lists the six simple machines, defines them, explains how it helps and gives examples.
Science Education Resource Center at Carleton College
Serc: Levers:relationship of Force of Effort & Resistance Fulcrum Placement
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...
Science Education Resource Center at Carleton College
Serc: First Class Levers
Through observation and inquiry, learners are given various objects to investigate how levers work and why they might be useful.
TeachEngineering
Teach Engineering: Let's Move It!
Young scholars explore methods employing simple machines likely used in ancient pyramid building, as well as common modern-day material transportation. They learn about the wheel and axle as a means to transport materials from rock...
Beacon Learning Center
Beacon Learning Center: How Can We Move Our Principal?
In this problem solving exercise, students must decide which simple machine would work best in different situations, in order to help the principal manoeuvre himself after he has hurt his leg and can't walk. The site has a good tutorial...
Other
Uss Constitution Museum: Constructing a Warship
USS Constitution was built as a fighting machine and utilized the six simple machines of science to accomplish the many tasks required of her. Students will identify and manipulate these machines to create inventions that would have made...
Other
Ontario Council for Technology Education: Designing and Testing a Crane [Pdf]
By the end of this project, students will be familiar with the 6 different simple machines and will be able to identify how these machines are used in products and tools they use on a daily basis. They will investigate how mechanical...
TeachEngineering
Teach Engineering: The Magician's Catapult
In this activity, students reinforce their understanding of compound machines by building a catapult. This compound machine consists of a lever and a wheel-and-axel. Catapults have been designed by engineers for a variety of purposes -...
Other
D&t Online: Linkages
This site describes different types of linkages and how they are used in simple machines.
Sophia Learning
Sophia: Practice W/ Levers
This lesson provides the learner with examples on determining the work done to or by a lever.
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.
TeachEngineering
Teach Engineering: Wheeling It In!
In an open-ended design activity, students use everyday materials (milk cartons, water bottles, pencils, straws, candy) to build a small-scale transportation device. They incorporate the use of a wheel and axle, and lever into their...
PBS
Pbs Teachers: Secrets of Lost Empires Ii: Lever an Obelisk
Utilize an understanding of how a lever works to lift an obelisk, using as few of the weights and support stones as possible in this online interactive activity.
PBS
Pbs Teachers: Secrets of Lost Empires Ii: Lever Lift
Examine the classes of levers and discover how levers work by raising a brick with shish kebab skewers.
Science Buddies
Science Buddies: Effect of Trebuchet Arm Length or Counterweight Mass on Project
A trebuchet is a catapult that uses a counterweight to supply the energy for throwing. They were used in the Middle Ages for attacking castle walls. In this project, you build your own model trebuchet and investigate how design changes...
Utah Education Network
Uen: Trb 3:3 Investigation 3 Weighty Mistakes
Understand the concept of "work" and the use of levers.
PBS
Pbs Teachers: Secrets of Lost Empires I Obelisk
Investigate how levers can be used to lift objects and discover how the position of the fulcrum affects the force and the distance of the load lifted.
My Science Site
Life Systems: Cells, Tissues, Organs
Extensive site for teachers provides some helpful resources that pertain to plant and animal cells. Includes a microscope diagram as well as plant, animal and pond labs. Also contains links to structures and mechanisms, matter and...
TryEngineering
Try Engineering: Trebuchet Toss
A lesson through which students design and build a small trebuchet from everyday materials. After building and testing their models, students will compete to see whose prototype produces the farthest launch.