Thanks to so many of you (130!) for coming to my talk.  My apologies to the other 60 or so people who couldn’t get in.  I had a great time, and appreciated your willingness to do some math, share your ideas, and talk with your neighbors about your thinking.

Exploring (vicariously) interactive applets that let students “notice and wonder”, talk about mathematical situations, and develop conceptual understandings of triangle properties, linear equations, systems of equations, and factoring trinomials.

Session 12, Thursday, October 25th, Meeting Room 17, Convention Center

National Council of Teachers of Mathematics Regional Conference, Connecticut, October 2012

Session 12 Handout (PDF)

For more about the Math Forum, including information from my colleagues Max and Suzanne’s talks, visit our Hartford page at  And don’t forget to fill out the survey in the NCTM Hartford App!

Types of Triangles – Annie Fetter

Link above includes handouts, sketch, and Sketch Explorer version

Key technology strengths:  exploring dynamic models of different triangle types, allowing students to develop intuition about different classes of triangles and what characteristics they do and don’t have.

Runners – NCTM e-Examples from Principles and Standards

Session 12 Runners Prompts (PDF)

Key technology strengths:  developing intuition about distance/rate/time and the concept of slope, without needing to know the formal vocabulary at all, as well as the ability to try things and get it wrong, and get instant feedback without fear of judgement by others.

Galactic Exchange – The Math Forum’s ESCOT Project

Session 12 Galactic Exchange Handouts (PDF)

Key technology strengths: the applet does the recordkeeping for you, and students can explore systems of equations without needing to know that they’re doing that, or even knowing that such a thing exists!

Algebra Tiles – National Library of Virtual Manipulatives

Session 12 Algebra Tiles Handout (PDF)

Key technology strengths: the variables actually vary!

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