Mathematical Practice #3

What is the importance of Mathematical Practice #3?  The Math Instructional Leaders  are answering this question in this month book study on the "5 Practices for Orchestrating Productive Mathematics Discussions".  Read through their reflections posted on their campus blogs regarding the importance of student math discussions. 

Students should be able to develop and defend their reasoning/understanding of a new concept and be able to critique the reasoning of others.  When you are lesson planning this month, how does your team plan on developing Mathematical Practice #3?

When your team is planning an upcoming lesson, review the "Student look-fors" for Mathematical Practice #3.  Build strategies or structures into your lesson that provide students opportunities to communicate their mathematical reasoning.  Structure classroom discourse where students can defend their thinking and learn from their mistakes.

Here is a great blog from Education Weekly on how students learn from their mistake.

What are your team plans for building this student Mathematical Practice?