Thursday, April 09, 2009

What's wrong with this picture?

Good thing I have been told to take down this number line - that I was forced to put up - in my classroom.

The reason had nothing to do with the obvious error, which had gone undetected in my room for a year and a half.

High stakes testing to the rescue of a mandated curriculum. Good grief.


sumidiot said...

Hmmm. 177 shouldn't be white?

Mark Ahlness said...

Tada! Yes, 177 should be black.

Amazing to think this went through design, edit, production, distribution, implementation, and evaluation stages.

I'm going to ask my kids to find the error on the timeline before I take it down. Bets on whether a group of third graders can spot the problem?