Pulleys

 
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SKILLS/ATTRIBUTES

Collaboration
Problem Solving

approximate time

90 minutes

 

This project challenge is suggested after class investigation and definition of pulleys and pulley systems. The class should have had a discussion or read books to have context for their creations. Always review the group-defined rules for positive collaboration.

 
 
 
Getting familiar with rope

Getting familiar with rope

Experimental pulley system

Experimental pulley system

Experimenting with leverage

Experimenting with leverage

Students used rafters to hang pulleys

Students used rafters to hang pulleys

Complex build to support tall pulley

Complex build to support tall pulley

Challenges for Students:

Begin by discussing with students where they have seen pulleys and where they are used around their classroom i.e. blinds or in life outside of the classroom.

The challenge is to lift the heavy items to a pre-determined height using a single pulley or pulley system.

Divide up Rigamajig kit equally amongst the groups.

Provide students with heavy objects and have them experiment with lifting them without any assistance.

Introduce the challenge.

Create groups of 2 to 4. Each group should come up with a group name. This encourages camaraderie amongst the groups and makes it easier to address the groups as they work. Provide paper and pencil for students if they would like to draw their ideas while brainstorming and making plans with their group members.

Have Fun!

Investigative questions to ask during exploration:

Is there a difference in the work being easier if one uses a pulley? Ask the students to give reasoning for their findings.

Does the work become easier with more than one pulley?

Teacher will be recording conversations and taking pictures/video to document work.

Follow-up Questions

What are you (were you) curious about?

What makes a good collaborator?

Tell us about a problem you encountered and how did you and your group members solve it?