|Name ofActivity||Pulley Wall|
|Keywords||pulley, wheel, beam, axle, wall, driver, follower, tension, bushing|
|Grade Level||K, 1, 2, 3|
|Time||1 Hour Total|
|Lesson Objectives:||– Introduce students to pulleys and how pulleys work.
– Teach students new LEGO pieces (pulley wheel, pulley band).
– Show students how pulleys can be useful in engineering and elsewhere.
|Brief Description||Each student will build a 2-pulley wheel pulley using a beam, 2 pulley wheels, 2 axles, 2 bushings, and a pulley band. Each team of students will connect their pulley walls together so that one driver turns the other three pulley wheels.|
|Materials Needed:||– LEGO Simple Machine Kit.
– ‘Engineer’s Final Report’ Worksheet.
|Preparation and Set Up:||
– Arrange students in pairs.
– Distribute LEGO Simple Machine Kits.
|Necessary Background||Pulleys consist of one or more wheels with a rope or band that wraps around the grove
on the circumference of the wheel. Pulleys are used in many different engineered designs.
A simple example is a well that has one pulley wheel and a rope, used to lift a bucket.
Other examples include, belt systems in cars, roping on sail boats, and in cranes.
Driver – the pulley wheel that is moved by a motor or person.
|Extensions or Modifications:||– Have students add a pulley wheel to make even longer pulley walls (teacher may need to supply extra wheels and bands).
– Let two groups work in a team of four to attach their pulley walls to make an 8 wheel wall.
|Sample Image 1||http://sites.tufts.edu/stompactivitydatabase/files/formidable/11_image_1.png|
|Sample Image 2||http://sites.tufts.edu/stompactivitydatabase/files/formidable/11_image_2.png|
|Sample Image 3||http://sites.tufts.edu/stompactivitydatabase/files/formidable/pdf.png|