More Multiplication Strategies in My Classroom

In my last post, some of the videos were not loading properly so I have since discovered a method to change the video format  – thanks to my Regional Math Team lead Cathy Campbell for sharing the conversion site!  They all should be up and running smoothly now- although some are slow to load!

This week we continue with exploring our personal strategies in my classroom.  Upon review I am once again in awe of some of the methods that seem to be working for my students.

On one review question students were asked to show a minimum of 3 ways they could approach the multiplication sentence of 6 x 7.

Some of their approaches are listed below.

6 x 7 = n   so I think of 7 x 7 = 49 – 7 = 42.

6 x 7 = n   I think of 6 x 10 – (6 x 3) = 60 – 18 = 42

6 x 7 = n  I think of 2 x 7 three times  2 x 7 = 14 x 3 = 42

6 x 7 = n  I think of 3 x 7 = 21 and I double it so 21 + 21 = 42

6 x 7 = n  I think of 5 x 7 = 35 and then I have to add 1 more sets of 7 on so 35 + 7 = 42

The following videos show clips of my students working using their personal strategies to solve equations.

Double and Halving Strategy

http://dl.dropbox.com/u/17156638/IMG_0539.avi      http://dl.dropbox.com/u/17156638/IMG_0538.avi  

10 x 10’s

http://dl.dropbox.com/u/17156638/IMG_0532.avi

1000’s

http://dl.dropbox.com/u/17156638/IMG_0534.avi

10 x 100’s

http://dl.dropbox.com/u/17156638/IMG_0535.avi

100’s

http://dl.dropbox.com/u/17156638/IMG_0540.avi

To be continued….

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About musingsofamathteacher

I am presently employed at New Sarepta Elementary School as a grade five teacher. During my career I have taught Grades 12 - 2. The past three years I was fortunate to work part-time as Math Lead for my school district, Black Gold Regional Schools, and have just recently accepted a part-time secondment with Edmonton Regional Learning Consortium. I have always had a passion for mathematics and am excited about implementing Alberta's "new" mathematics curriculum.
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