Thread: 42
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Old 11-18-2018, 03:22 PM   #10
Walter Martindale
Location: Edmonton, AB
Join Date: Jun 2006
Posts: 787
Re: 42

Rupert Atkinson wrote: View Post
I'm an English teacher and like to have fun with my form class.

Two year 9 (aged 13) kids were arguing about whether 7x0 equalled 7, 1, 0 or infinity. The whole class was laughing at them. So what should a good teacher do?

I asked - "If you have no 7s how many 7s do you have?" None came the reply.
Then I asked - "If you have 7 zeros how many zeros do you have." Seven came the rely. Ah ... came the enlightened reply.

So 0 x 7 = 0 but 7x0 = 7 came the enlightened shoutback from one of the kids.

The rest of the class sat in stunned silence as they were all rethinking their math skill. I left it at that. Newly enlightened, not. Ha ha.
Well, no sevens is none, yes. But seven zeros is "0000000" (still equals zero) and 7x0 is indeed 0
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