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Secondary Magazine - Issue 121: Eyes Down

Created on 23 April 2015 by ncetm_administrator
Updated on 20 May 2015 by ncetm_administrator


Secondary Magazine Issue 121'Braun Paxette II' by Kurt Bauschardt (adapted), some rights reserved

Eyes Down

Eyes down...your Starter for Ten...it’s the monthly picture that you could use with your pupils, or your department, or just by yourself, to make you think about something in a different way.

Vedic Multiplication - a celebration of diversity within the maths classroom.
Here is a picture of a form of Vedic multiplication. The answer is 736 but how does it work?

Ask your pupils if they can figure it out.
Ask if there are any other ways they could calculate 23 x 32.
What about the Egyptian method...the Russian Peasant Algorithm...or Napier's Bones?
Gypsy Hand Multiplication is another favourite which helps ease time tables.

Are there any other radically diverse methods for calculations your pupils can discover?

Looking at the different forms (or even just one, such as Vedic multiplication), you could challenge your pupils to multiply two 3-digit numbers, or two non-integers.

There are at least 16 different ways of tackling multiplication! The pupils in your class may have a variety of methods between them and this is an opportunity to celebrate difference - both difference in method and difference in culture - at the same time as deepening their conceptual understanding. Do you have any alternative methods you wish to share that may prompt discussion? Let us know info@ncetm.org.uk.

If you have a thought-inducing picture, please send a copy (ideally, about 1-2Mb) to us at info@ncetm.org.uk, with a note of where and when it was taken, and any comments on it you may have.

Image credit
Page header by Kurt Bauschardt (adapted), some rights reserved



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