## “Discovering Pi” (an in-class project)

October 15, 2011 by Molly Kate

Since the principal special requested math-art to decorate the 9th floor hallway I finally get to do a project with my students. Unfortunately, I’m pressed for time and I have to do a one day in-class project with posters up by Friday. But fear not students, I think I have an idea.

I found this online and it’s pretty much what my co-op described he wanted to do. In 48 minutes I think we can move this 2 day 7th grade lesson to an 11th grade discovery activity. Furthermore I *know* these students do not know what pi really means – hell it took me a whole week to teach that it was irrational (but they ALL got that one right on the previous quiz, yay!).

The one thing I preferred about the original activity was that students measured 6 different objects on their own. My students really struggle with measurement in general (i.e. they don’t quite know 12 inches in a foot etc.) so I don’t want to take away from the purpose of the project by creating too many obstacles but I also don’t want to lose the fun in it.

The students will measure 2 pre-cut different sized circles and fill out the worksheet accordingly. I was thinking to put a big grid on the board where all the students would record their final column. Once we discover that “Hey – that’s pi!” – we’ll see which student measured closest to pi which can lead us to discuss measurement error and so forth.

Thoughts? Revision suggestions? This is not happening until Wednesday so I look forward to your comments.

### Like this:

Like Loading...

*Related*

on October 15, 2011 at 10:57 pm |TinaWhen we do this on pi day, we roll our circular objects down the hall for 100 feet (counting revolutions). It’s supposed to give a better circumference, but really it’s just fun to make kids roll stuff down an entire hallway! It’s a great activity and they get excited about who will get the best value (I write the best so far on the board and update it throughout the day).

on October 29, 2011 at 9:38 am |A big test is fast approaching and I was told no one can fail « mathemagical molly[…] refuse to compromise learning so everyone can get an A. When I did the discovering pi project (pictures and awesome post soon to come) it went GREAT and I scored it as a quiz grade to boost […]