April 27th, 2007 by Dan Meyer
- Some difficult Pythagorean Word Problems
- A discussion of the distance formula.
- Some really pretty slide work.
- Some really sturdy distance formula scaffolding.
- Louisianans, Mainers, Nutmeggers, New Jersey-ites, Bay Staters (Massholes, more locally).
- I cut the word problem assignment waaay back. Painful.
- Ask if the baseball bat (34 in.) fits in vertically. Where’s the right triangle?
- Didn’t get to this.
- Monterey Bay, CA.
- I want to know the distance, by air, from Pebble Beach to the Presidio. Each box in the grid is a square mile. (Not true, but let’s roll with it for argument’s sake.)
- They’ll count squares here.
- They’ll count squares here too.
- Here, they can’t count squares. So what do you do?
- Give what they’ve done on the last several problems, have them derive the formula.
- Again we’re Pythagorizing, but looking for a rule, a pattern.
Notes & Revisions: