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.
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.
Other
Hognosesam: Linkages
This site illustrates different types of linkages that are used to create different types of levers.
NASA
Nasa: Simple Machines
A lesson plan site that contains activities designed to give grades 3 and 4 experiences in using 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.
Sophia Learning
Sophia: Simple Machines: Levers: Lesson 2
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."
Sophia Learning
Sophia: Levers & More Complex Machines
This lesson explains how levers can be applied to more complex machines.
Ducksters
Ducksters: Physics for Kids: Simple Machines
Kids learn about the science behind simple machines such as levers, wheels, pulleys, inclined planes, and screws. How they work together to make complex machinery.
Other
D&t Online: Linkages
This site describes different types of linkages and how they are used in simple machines.
CK-12 Foundation
Ck 12: Plix: Simple Machines: Lever
[Free Registration/Login Required] Drag the labels to identify the different parts of the wheelbarrow as parts in a lever.
CK-12 Foundation
Ck 12: Plix: Simple Machines: 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.
Walter Fendt
Walter Fendt: Lever Principle
A short interactive activity which demonstrates when a lever is in equilibrium.
Science Struck
Science Struck: Could Archimedes Have Lifted the Earth?
Read the story behind Archimedes' claim that he could lift the Earth with a lever. The author analyzes this hypothetical claim to show that it would never be possible to lift something as massive as the Earth.
The Franklin Institute
The Franklin Institute Online: The Incredible Lever
This site contains a scientific experiment in which students build a lever by using a wood plank and brick.