Browsing All Posts published on »April, 2011«

That ol’ number line again…

April 5, 2011

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had another student act as ‘anecdotal evidence’ that yes, Dorothea Steinke is right on target with the hypothesis that students are in more basic stages than we realize.   Fortunately, extra attention to the number line made a big difference — but the fact that she was far enough in algebra to be doing absolute value […]