Class Agenda #25

Opening Problem:

What is the area of an equilateral triangle that has three sides that are 100 cm in length?

Finishing Our First Construction

What is the definition of π?

One Man’s Definition Of Pi (From Godling’s Glossary, By Dave Krieger):  Pi.

  1. The Greek letter P or p, corresponding to the roman p.
  2. A number, represented by said letter, expressing the ratio of the circumference of a perfect circle to its diameter. The value of pi has been calculated to many millions of decimal places, to no readily apparent purpose: no perfect circles or spheres exist in nature, since matter is composed of atoms and therefore lumpy, not smooth. Nature herself sometimes takes to rounding off the more extreme decimals of numbers when they get sufficiently small, as Prof. Heisenberg has pointed out. However, the continued extension of pi provides a harmless exercise of computer power which would otherwise be misused playing Quake or surfing pointless web sites.

Instructions for building your next construction…

Record Sheet Prompts:

  • Write a sentence about what you did in class today.

  • Write one question you have about the work we did in class today.

  • On a scale of 1 to 10, how much perseverance did you demonstrate in class today?  Why?

Check In Quiz (8 minutes)


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