Rounding to significant figures

Download the PowerPoint here.

I didn’t want to have an example problem pair for this. Instead I went with more of a pattern spotting thing.

I think this is quite nice (it all animates in so isn’t displayed at once).

Then some fluency questions.

Then another PIXEL PUZZLE. I like these, and my ratio one is my most downloaded TES lesson.

There’s also a little venn diagram task. Mathsvenns.com by Craig Barton has got some nice ones of these.

Also all the usual gubbins. A learning check etc.

I guess I could have added some ‘real life’ stuff to this, but I didn’t want to. The football stadium holds 25,675. Round this to one significant figure etc. I find those kind of questions a bit drab.

I did, however, add this:

It provoked some discussion.

Richard