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Author Archives: Bill McCallum
The last remaining progression, the quantity progression, is here. Comments in the forums welcome!
The site was down for a few hours today because of a malware attack, but I think we have it fixed now. I took the opportunity to catch up on comments in the forums; I was way behind! Thanks to … Continue reading
It’s been a while coming, but here is the draft Geometry Progression for Grades 7 to High School. As usual, please make comments and corrections in the relevant forum.
While we are all waiting eagerly for the geometry progression I thought people might be interested in this article by Henri Picciotto and Lew Douglas on a transformational approach to the criteria for triangle congruence and similarity. There is also … Continue reading
I don’t think the normal notifications went out about this, so I’m adding this to let people know about the collection of essays about secondary mathematics that I posted yesterday.
In 2008–2009 Dick Stanley and Phil Daro, with the help of Vinci Daro and Carmen Petrick, convened a group of mathematicians and educators to write essays clarifying the mathematical underpinnings of secondary school mathematics in the United States. At the … Continue reading
Some people are getting a message that comments have been closed if they try to post a comment on a post. I don’t generally close comments, so this is an error. I haven’t figured out how to fix it, but … Continue reading
A number of people have gotten in touch with me recently about Appendix A, so I wanted to clarify something about its role. States who adopted the standards did not thereby adopt Appendix A. The high school standards were intentionally … Continue reading
Here the almost final draft of the Progression on Number and Operations in Base Ten, K–5. It incorporates many changes in response to comments here on this blog and elsewhere. In addition to numerous small edits and corrections, and some … Continue reading
Illustrative Mathematics has a new look today. There’s a video explaining some of the new features on the Illustrative Mathematics Facebook page. One big new feature is the course blueprints. At the moment we just have K–5 blueprints. We’ll be … Continue reading