Symbolizing and Communicating in Mathematics Classrooms by Cobb Paul. Yackel Erna. McClain Kay

Author:Cobb, Paul.,Yackel, Erna.,McClain, Kay.
Language: eng
Format: epub
Publisher: Taylor & Francis Ltd

(31)

Lin:

No, it was str-, if straight up [bottom of C] is fast, [Tracey: Uh him.] really fast, it… And if it’s like, a straight line like this [the portion of C to the right (almost horizontal)] it’s kind of like stopped, [Tracey: Right.] if you look at it this way [normally]… But if you look at it the other way… [rotated 90 degrees].

(32)

Tracey:

So, like, up to here [marking off a section near the bottom of C] he’s like stopped?

(33)

Lin:

Umm, ’cause [tracing C]. Yeah, but, if you turn around [rotated counterclockwise 90 degrees], like, the way that the bear’s facing, I guess this [bottom of C] would go fast [Tracey: Yep.] and then right here [top of C] is kind of stopped, maybe.

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