'Which of these numbers changes most when rounded to 4 decimal places?'

Thankfully not! We were in the grotto/fernery in the Swiss Garden at Shuttleworth.

Unfortunately, for me, there was an even number in the class, so I had no-one to play against.

Fortunately, however, I had an online version of the game I made, which allowed me to play against the computer instead!

interwovenmaths.com/_DigitDisgui...

To be fair, I already suggested it to you as a title in a conversation two years ago!

In particular, the second row of the table (Finding an inequality with solution set 0 < x ≤ 1) prompted great discussions about whether it could be done with a quadratic, properties of asymptotes, etc.

Or, as David Foster Wallace put it, 'There is no such thing as not worshipping. Everybody worships.'

Lots more of Susan Wall's excellent tasks can be found at:
www.stem.org.uk/resources/re...

I'm finding a lot of them are great for generating interesting discussions and helping me work out which bits of the early chapters of AS Pure can be skipped.

Other ones we've done include:
1) another nice quadratics task with some lovely generalisinging

2) an odd one out indices task, with opportunities for some creativity when giving the odd ones out friends!

It's a ship joke.

I love these reflections, especially 4.

I often tell students how I used to teach DofE expeditioners to keep checking that things they could see on the map matched reality and that things they saw in reality could also be found on the map.
Always looking out for mathematical points of interest!