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GREAT PENCIL INVENTION

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  1. GREAT PENCIL INVENTION Inventing a New Kind of Pencil

  2. So you want to do some inventing? • What's wrong with this pencil? • Here are some typical replies: • small • ugly • no eraser • needs sharpening • made out of wood • can't see inside and how it works • can't write on chalkboard • not made of steel • goes down too fast • lead always breaks • can't eat it • easy to lose • not interesting • not decorated • too skinny • too fat

  3. "How can we improve this pencil?" • What new features can we add to make it more useful? • Here are some more ideas: • put an eraser on • make the eraser bigger • change the color • make it longer • get a new one • make it fatter • make it skinnier

  4. GREAT PENCIL INVENTION • How about this pencil? • Who or for what would this pencil be used? • hammer • doctor's hammer • screw driver • cork screw • can opener

  5. GREAT PENCIL INVENTION • How about this pencil? • Who or for what would this pencil be used?

  6. GREAT PENCIL INVENTION • One of my first inventions! • What ideas do you have for a new pencil? • mirror • lipstick • eyeliner • compact • mascara • comb • chocolate • pretzel • fruit • card case • TV • camera • typewriter • computer • calculator • Compass pencil: has compass built into the end.

  7. GREAT PENCIL INVENTION • More designs…. • prism • eyeglasses • telephone • pager • stapler • scissor • fish tank • watch • clock • animal • insect • candy • candy dispenser • flashlight • glow in the dark • lighted tip to write in the dark • emergency flasher: lets install one on our ugly pencil above:

  8. GREAT PENCIL INVENTION • More designs…. • chalk • dental mirror • tooth brush • floss • toothpicks • sharpener • mechanical pencil • bugger digger • tissue holder • airplane • flying pencil • more eraser • This “silly" pencil was invented by one student

  9. GREAT PENCIL INVENTION • More designs…. • triangular • square • round • hexagonal • built in torch • matches on one end • match holder • cigarette lighter • musical instrument • tuning fork • spring • gyroscope • top • physics demos • fork • spoon • chopsticks

  10. GREAT PENCIL INVENTION • Enough ideas for you? • Well, now is the time for getting the class to do improve • their critical thinking skills. • For example, ask the class: • Which pencils could be invented with simple tools and easily obtained items. • Which items could be manufactured most easily? • How much can such a pencil be sold? • Does the class want to form a small business manufacturing and selling pencils, or any other items? • What kinds of activities are involved?