
CLIME is the Council for Technology in Math Education - an affiliate of NCTM since 1988
Sunday, May 10, 2009
NCTM 09 Conference Reflections

Tuesday, April 28, 2009
Blogging, Tweeting and Web 2.0
Blogging became real for the first time at the NCTM meeting in Washington. After a limited trial balloon last year in Salt Lake City, NCTM created a Blogger site specifically intended for conference attendees to give some first hand information as to what what was going on at NCTM as close to real time as possible. Even closer to real time were a few tweets (See http://twitter.com/nctm and http://search.twitter.com/search?q=%23nctm09) that informed followers of what others were experiencing at the conference.That is, of course, if they were able to find some available Wifi which was a challenge if you weren't willing to pay the $25 daily fee.
There actually was a free Wifi area at the convention center near the Mt. Vernon/7th St. entrance. Not well publicized. I took a photo but forgot to post it so it obviously helped no one.
Dave Powers set up a Ning group site for folks to share what they were learning and presenting at NCTM 09. I'm thinking about continuing to use the forum for CLIME updates and other issues related to math and technology teaching and learning. Here are some of the posts at this site.

Monday, April 27, 2009
The NCTM Conference ends in grand style
If you were in Washington last week and you had to leave early or for some reason missed this session, you can catch the closing session online via Windows Media Player.
The dynamic duo of Arne Duncan and Ron Clark closed the conference in grand style. Ron Clark is not to be missed. In this streaming video Arne is up first followed by Ron.
CORRECTION - NO Ron Clark on the video, only Arne. A major disappointment. Arne was good, but Ron stole the show. I hope NCTM will post it. In the meantime you can check out the video that he showed at the outset of his talk at his website (http://www.ronclarkacademy.com). Once the main page comes up, click on the image that "Watch Now" points to (like in the image below.)
See also Scott Steketee's review of Arnie's half hour presentation.
Thursday, April 9, 2009
What’s up with technology at the NCTM Conference – a preview

The first thing I do every year (as I prep for this conference) is to try to get a sense of the technology presence from the session titles and descriptions. This year in Washington there are 828 general sessions* of which I identified 120 as technology related (14.5%**). If you search for the technology sessions using the online planner you will come up with only 56 sessions. Of course, there is always wiggle room for the actual number of these sessions since technology in many(?) cases is implied (e.g. data analysis and probability sessions) since they don't include the tag names that would give it away. (See the tag cloud*** which shows visually the frequency of the tech tag words in the 120 tech-related sessions I identified.)
Sketchpad leads the way. I wasn't surprised to see that Geometer's Sketchpad was the leading software mentioned. (Key Curriculum is introducing a new version of Sketchpad at the conference.) Other software mentioned: Fathom, Excel, Geogebra, Geometry Expressions, Google Sketchup, Cabri, Stella and Maple. TI-Nspire took the calculator honors with 26 mentions. (See the rest of list by clicking on the image on the left.)
Web 2.0 is just beginning to make inroads into conference agenda with 4 sessions. I hope to get to each of them and will be sharing my thoughts via this blog during the course of the conference.
I’ll be leading the Emerging Technologies one on Thursday at 2:00-3:00 in meeting room 2 at the Rennaisance.
I will also be blogging at this site and on NCTM's new blog site throughout the conference. If you use Twitter you can follow me there as well. Hopefully I'll find a convenient place to write them. As I mentioned in the previous blog the convention center rate for Wifi is now $24.95 a day. I'm still upset about the charge going up from 8.95 to 24.95 as of April 1st. I guess they figure they will take advantage of all the rich math teachers that will be there.
More later. -Ihor
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**Last year in Salt Lake City there were also 120 technology sessions, but only out of 740 sessions for a slightly better than a 16% rate. The spike was probably due to the fact that the theme was “Becoming Certain about Uncertainty” a topic that lends itself more to using calculators and computers in the classroom or at least it should.
***What is a tag cloud? Here's a more dynamic version of the tag cloud above. I also made a tag cloud removing the dominating word "technology" to get a better perspective on the specific technologies discussed this year. You can make your own cloud at: http://Wordle.net
The entire program book is on the web in PDF form at
http://www.nctm.org/conferences/content.aspx?id=2147483853
Saturday, March 28, 2009
This is Outrageous!
I just found out that the convention center in Washington DC raised their wifi access price from $8.95 to $24.95. This is terrible. Especially since NCTM is encouraging attendees to blog and tweet at the conference. More about the conference in my next blog.
Monday, February 23, 2009
CLIME 2009 - Goals & Highlights



If you don't have a google account you can use your own email address to access google maps. Here's a good entry point for first time users. For more info about using Google Maps for collaboration go to this link. (If all else fails let me know and I can help you.)Add your location to the CLIME map

I guess you can call this a Web 2.0 approach to signing a petition. So please take a few minutes and let me and the CLIME world know that technology is indeed worthy of its principle status and should be championed as such.
NCTM Conference 09 Update
The NCTM 09 Washington Conference sessions have been posted. I’ll take a closer look at the technology sessions in my next blog.
Monday, November 10, 2008
Capturing the Teaching Moment: Predicting Election Results – part 2
I was recently watching a pre-election podcast of the CBS McLaughlin Group show (clip below) in which John McLaughlin asked Pat Buchanan to predict the outcome of the presidential election.
He said: "The outlook is [a] probable Obama victory." I paused the podcast at that point and thought that what Pat said was not exactly a hard call to make given the multimedia rendition of data that I just watched. I wondered at that point what he would have said if he was also asked to predict the margin of victory in percentage points. (I found out the answer later in the show but I didn’t know that at this point.) Here’s a summary of the show's pollsters' predictions.
The point spread ranges from a low of 3 to a high of 15. I've added an additional pollster "pundit" which I affectionately call "Kid" Average and include this numerical wonder as a candidate for the best estimate prize as well.
A question for you. If we could turn back clock to before the election results were known, which polster would you have bet on to have made the best projection (i.e. came closest to the final outcome based on the polls provided by McLaughlin?) I would have bet my money on "Kid" Average who as I found out later did reasonably well. (See spreadsheet below.)
According to today's (11/10/08) CNN website Obama won by 6.6 percentage points.
I used a simple average of the polls to come up with my prediction. The pollsters not only use averages but also more sophisticated regression methods to make their projections. Here's what is written in the FAQ page at pollsters.com:
"In most cases, the numbers are not an "average" but rather regression based trendlines. The specific methodology depends on the number of polls available.
He said: "The outlook is [a] probable Obama victory." I paused the podcast at that point and thought that what Pat said was not exactly a hard call to make given the multimedia rendition of data that I just watched. I wondered at that point what he would have said if he was also asked to predict the margin of victory in percentage points. (I found out the answer later in the show but I didn’t know that at this point.) Here’s a summary of the show's pollsters' predictions.



- If we have at least 8 public polls, we fit a trend line to the dots represented by each poll using a "Loess" iterative locally weighted least squares regression.
- If we have between 4 and 7 polls, we fit a linear regression trend line (a straight line) to best fit the points.
- If we have 3 polls or fewer, we calculate a simple average of the available surveys.
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