Pencil Sharpener Explorations

Resource Info

Basic Information

Pencil sharpener can be used a TLM to discuss and explore many concepts of science and maths. (And also for creating classroom art out of the 'waste'!)

Duration: 
00 hours 40 mins
Introduction: 

Every ordinary object inside the classroom can be used as a potential TLM. Can pencil sharpener be one?

Activity Steps: 

Pencil sharpener can be used to demonstrate:

  • How a (usually) hexagonal pencil end gets its conical shape.
  • How an Archimedes screw works
  • How an outward spiral of pencil shavings is made
  • How a 'Right Hand Screw' rule works
  • Why the sides need to be ridged.
  • To check whether the sharpeners are usually partial to the right-handed people.
  • The 'necessity' of an inclined plane for the blade and many more!

You may also show them a beautiful 6min video based on Leonard Read's classic I, Pencil

 

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