Wednesday, September 2, 2009

Numeracy in Action

Todays groups looked at 7 lots of 38 and how we could work it out. They decided it was easiest to have 3 lots of 10 and 2 lots of 4 in each column. That made it easier to work out 21 x 10 = 210 and then 4 x 14 = 56. It was easy after that as 56 + 210 = 265as the answer. We then talked about 38 being close to 40 so 40 x 7 = 280 and because we added 7 lots of 2 we took off 14 from 280 which gave us 265 as well. Our last strategy was to look at 7 x 30 which is 210 and then times the remainder 8 by 7 which is 56 and add 56 onto 210 also giving us 265. Phew ..... that was heaps of strategies in one lesson but it really does make it a lot quicker to answer things in our heads (imaging). OUR LEARNING INTENTION WAS: I AM LEARNING TO SOLVE MULTIPLICATION PROBLEMS BY USING A VARIETY OF MENTAL STRATEGIES.


1 comment:

  1. your blog is really kwl i like the virtual pets and how you can feed them

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