A blog about teaching and learning in a maths classroom.

It does the Math™

Thursday, 27 December 2012 | 0 Comments

Back in 2010, putting a piece of wall in our kitchen to attach a child gate to, a problem arose about evenly spacing screws.

I was amused to get a Strait-Line® Rolling Tape™. It calculates evenly spaced points™. I really liked the line on the packaging:

It does the Math™

It Does The Math

Well, I’m out of a job!

But, then I was putting three dog bottom hooks on the same wall. I wanted to find the centre. In the olden days, you would measure and halve.

How can we use this device to find the centre without doing any math?

Dog Bottom Hooks

Posted in • Lesson IdeaMeasurementMediaPhotoWhat can you do with this? | Short URL:


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Simon Job — eleventh year of teaching maths in a public high school in Western Sydney, Australia.
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