Illustrative Mathematics, with the assistance of Mary Knuck, Deborah Schifter, and Susan Jo Russell, has been working on developing grade band elaborations of the Standards for Mathematical Practice. Here is a draft of the K–5 document.

As usual, please comment by starting a new thread in the forums. I’ve created a new forum for the practice standards there.

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## About Bill McCallum

I was born in Australia and came to the United States to pursue a Ph. D. in mathematics at Harvard University, met my wife, and never went back. I am a professor at the University of Arizona, working in number theory and mathematics education.

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As an instructor of mathematics for future elementary school teachers, I was glad to find this document. I suggest that it would be easier to associate the annotations with their corresponding parts in the text if they were marked with numbers instead of asterisks.

Ellen