## Geometry – Day 68 – Pythagorean Word Problems & Distance Formula

Come for:

1. Some difficult Pythagorean Word Problems
2. A discussion of the distance formula.

Stay for:

1. Some really pretty slide work.
2. Some really sturdy distance formula scaffolding.

Materials

1. None

Attachments

Slide Deck

1. Louisianans, Mainers, Nutmeggers, New Jersey-ites, Bay Staters (Massholes, more locally).
2. I cut the word problem assignment waaay back. Painful.
3. Ask if the baseball bat (34 in.) fits in vertically. Where’s the right triangle?
4. Didn’t get to this.
5. Monterey Bay, CA.
6. 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.)
7. They’ll count squares here.
8. They’ll count squares here too.
9. Here, they can’t count squares. So what do you do?
10. Give what they’ve done on the last several problems, have them derive the formula.
11. Again we’re Pythagorizing, but looking for a rule, a pattern.

Notes & Revisions:

### 4 Responses to “Geometry – Day 68 – Pythagorean Word Problems & Distance Formula”

1. on 27 Apr 2007 at 7:15 pmDan Dawson

If we’re going by air, let’s at least use an aviation map! hehe… here’s a Google Map setup that uses aviation sectional charts :-) This link is centered on Monterey for you.

http://runwayfinder.com/?x=-121.9581985473633&y=36.573721733583724&z=11

2. on 27 Apr 2007 at 10:07 pmdan

Well if you’re gonna make it that easy for me, what else can I do?

3. on 29 Apr 2007 at 7:26 pmtweb

Hey dan, just peeking in at your stuff here…GREAT JOB!

Have you tried using Google Earth to show actual distances to check your work on problems like the Monterey-Pythagorean one?

Very cool…students get a kick out of it.