Number Talks! Sara Van Der Werf Minneapolis Public Schools South High School SW Math Conference 2016 sarav@mpls.k12.mn.us 612-600-6307 twitter @saravdwerf Number Talks!

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‘The quiet one.’ INTROVERT

48 Rume bags

I saw a kid multiply 2 times I know! I saw a kid multiply 2 times 6 on his calculator. Ugh! These kids don’t know how to multiply!

2015 FAVORITE MATH BOOK

? What is a Number Talk?

mentally solve 85-29

Possible Solution Strategies

A Number Talk is a short, ongoing daily routine that provides students with meaningful ongoing practice with computation: keep Number Talks short, as they are not intended to replace current curriculum or take up the majority of the time spent on mathematics. spend only 5 to 15 minutes on Number Talks Talks are most effective when done everyday

EQUITY & ACCESS

11th Grade Core Math Class Goals: Write quadratic equations. Recognize and prove quadratic expressions are equivalent Solve problems involving quadratics.

Without counting one by one, how many ducks are there? http://www.visualpatterns.org/

http://www.visualpatterns.org/

Number String (Mental Math) 3 x 50 3 x 100 3 x 149

True/False Number Talk  

Dilemma Number Talk Kirsten says that 10xy-5xy + 4xy equals xy David says that 10xy-5xy + 4xy equals 9xy *Introduce Dilemmas as a type of number talk *What could come before and after this number talk. Give rationale. Explain the mathematical reasoning that both David & Kirsten used to simplify the expression above. 35

Number Talk Examples Dot Patterns Mental Math Number Strings True/False Statements Dilemmas Spatial Reasoning What’s My Rule? Error Analysis and Coaching Cecilio

Number talks Without counting the red circles one by one, how many red circles are in the picture? http://www.visualpatterns.org/

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saravanderwerf.com twitter @saravdwerf Resources: saravanderwerf.com twitter @saravdwerf