Teaching for Perplexity

Perplexity, Then Standard

LinkTechnology Tutorials

LinkDaily Doozy

LinkGrammar Mistakes

LinkApostrophe Abuse

LinkWhat If Everybody In Canada Flushed At Once

LinkHoles Movie Clip and Activity

LinkOrbeez Movie Clip and Activity

LinkGoogle Voice Tutorial

LinkShort Yellow Lights

LinkPlaying Catch-Up

LinkThe Short Shovel

LinkThe Ticket Roll


LinkThree-Act Math Tasks

Super Stairs

LinkSuper Stairs


Deconstruct the experience. What are the three acts of this story? What were the teacher moves? How is it different than the same kind of problem in a textbook?


FileTextbook Modeling

LinkCommon Core Modeling

“The basic modeling cycle is summarized in the diagram. It involves:

(1) identifying variables in the situation and selecting those that represent essential features,

(2) formulating a model by creating and selecting geometric, graphical, tabular, algebraic, or statistical representations that describe relationships between the variables,

(3) analyzing and performing operations on these relationships to draw conclusions,

(4) interpreting the results of the mathematics in terms of the original situation,

(5) validating the conclusions by comparing them with the situation, and then either improving the model or, if it is acceptable,

(6) reporting on the conclusions and the reasoning behind them.”

Secret Skepticism Survey

Whenever I’m sitting in your seat, sitting through some kind of professional development, I often feel a burning, secret skepticism, something that I keep to myself. I’m inviting you here to make that skepticism or question known (anonymously) to the rest of us.

LinkSecret Skepticism Survey


LinkThree-Act Math Tasks


LinkEstimation 180

LinkGeoff Krall’s Problem-Based Learning Maps

LinkVideo Story Problems (Primary Grades)

fileIntellectual Need