Archive for September 11th, 2011

More Multiplication Algorithms! Teach in Guided Math Groups

Posted on September 11, 2011. Filed under: Assessment, Common Core, Elementary math, Guided math, Mathematical Proficiency | Tags: , , , , |


Here are more multiplication strategies and algorithms.  How many of these do you recognize?  Which ones would you add to your teaching toolkit?  Which ones would you use when?  Which ones seem more efficient in which situations? I think we should do this type of work in small guided math groups so that students can talk through their understanding and listen to others think outloud. A small group provides the space for “public mathematical thinking” and deeper discussion.  Take a look at these different ways of multiplying:

Compensation

Doubling/Halving Method

Egyptian Method of Multiplication

Cross Hatch/Line/Mayan Multiplication

Example 1

Example 2

Example 3

Multiplying by 25

 

Also be sure to look at the Schultz Math Center Multiplication videos!

Try some out and be sure to write me and share your thoughts about teaching different multiplication algorithms in your classroom! Remember that the Common Core emphasizes that students should have a variety of strategies and algorithms for the basic operations.

Happy Mathing,

Dr. Nicki

 

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