Presented by:
Ihor Charischak

Council for Technology in
Math Education
(Link to latest version of this page)

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Come and see examples of how Web 2.0 and dynamic software can transform math learning and teaching. Participants will experience a series of unique and compelling collaborative activities that incorporate significant software environments (spreadsheets, Sketchpad and Web applets) that will help a teacher to engage students in gaining a deeper understanding of powerful mathematical ideas.


Current list

DMC Blog

Road Sign Problem

updated: 4/5/14

NCTM Conference
Session #398
Friday, 4/11/2014
Grand Ballroom A 
Hilton Hotel
Set the Stage: Overview of Math 2.0
Warm-up video: Hans Rosling's dynamic video (4min)
Quicktime movie (10:40) of my slide presentation - link - full audio to be added later. Will let you know when its done. (Alternate site link)

1 Jinx Puzzle
Pick a number,  Add 11, multiply by 6, subtract 3, divide by 3, Add 5, Divide by 2, Subtract the original number. (Why is this called the Jinx puzzle?)
Blog entry - link
Jinx puzzle lesson - link

2 Average Traveler Activity
Today we are going to find out who traveled the average distance to get to this conference. First we'll start off with a guess. What do you think is the average distance that the members of this group traveled today?
Link to activity
My blog entry about this activity - link

The Great Green Globs Challenge
What is the highest score you can get for this array of Globs? (Link) Globs Blog entry and Video tutorial intro (3:40)
Video: Green Globs meet Parabolas (3:44)
Neil Cooperman - Green Globs Contest (1995) - video (12:30)

4 Measuring the circumference of the Earth
Over 2,000 years ago Eratosthenes made a remarkably accurate measurement of the earth's circumference. This project is a recreation of that measurement and requires collaboration of students in places at different latitudes on the earth to make shadow measurements, share data, use a spreadsheet (optional) to make comparisons, and then replicate and share their results.
In the Spirit of Eratosthenes: Measuring the circumference of the earth - Ihor's article
Every March and September
- Collaborative Project Website

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