Return to Headlines


On Tuesday, October 13th, a group of Cambrian teachers TK-8th grade met to collaborate and reflect around the Common Core Eight Mathematical Practices.  These eight practices are an interweaving thread throughout all of the grade levels TK-12 and are critical to student success in mathematics for 21st century learning.


Working with Sally Keyes from Silicon Valley Mathematics Initiative and Kamaljit Sangha from Ida Price, these teachers participated in a week-long summer workshop and will spend two additional days this school year creating professional development modules for Cambrian teachers around the eight practices.  

The Eight Mathematical Practices TK-12th Grade:

  • Make sense of problems and persevere in solving them.

  • Reason abstractly and quantitatively.

  • Construct viable arguments and critique the reasoning of others.

  • Model with mathematics.

  • Use appropriate tools strategically.

  • Attend to precision.

  • Look for and make use of structure.

  • Look for and express regularity in repeated reasoning.

One of the most efficient and powerful ways to incorporate these practices into daily mathematics instruction is through number talks.  Number talks are teacher-guided, student-centered, and brief.  The teacher poses a problem for students to solve mentally and allows time for all students to process the problem in multiple ways.  Once they have had adequate time to ponder, students volunteer their answers aloud and must explain their thinking and strategies.  The teacher poses probing questions to encourage deeper thinking and reflection, and students justify their own methods as well as the methods of others.  Students’ strategies are recorded by the teacher on chart paper for all students to process visually, and the entire discussion lasts around ten minutes.  

Moving forward, the teachers in this group will be facilitating grade-level discussions around the Eight Mathematical Practices and Number Talks at an upcoming district-wide professional development afternoon on October 28th.