Monday 14 November 2016

Which One Doesn't Belong?

Today Ms, Lirenman showed us four numbers and we had to decide which one didn't belong.  The numbers we were showed were 9, 16, 25, and 43.  At first, everyone was quick to say that they knew which one didn't belong. But when asked, it seemed we had a few different answers.  Some children said it was the 9, some said it was the 16, and others said it was the 43. We were confused.

Ms. Lirenman then asked us to explain our reasons behind the numbers we have chosen. Some picked the 9 because it was only a single digit number, some picked 16 because it was an even number, and some picked 43 because when you add 9 and 16 together you get 25 so it obviously didn't belong. Not so obvious right?  There were other answers too, all correct.

If you're curious to see more of these problems check out the Canadian website . Ms. Lirenman tells us we will be doing many more of these over the school year.

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