Yes - all the sessions are recorded and available to teachers who sign-up.

There are 4 tickets that I bought this summer that weren't used. The admin fee they'd have charged to refund them was the same amount as the cost of the tickets!

... but, once the understanding has been developed then the 'by hand' version doesn't have much more use and technology will often be quicker and more accurate

I think a good distinction is whether it supports greater understanding - e.g. multiplying two two-digit numbers by hand helps understand place value; whereas, the algorithm for finding square roots gives very little insight, so it's best done by technology ...

I'd did a great project once with a group of sports studies who had to learn the normal distribution. We devised our own scoring system for the decathlon.

Similar - none for ages then 20 over the weekend. ???

Come for the maths and stay for the ethical discussions. :)

"shine" and "than" here, but with a stress on "th"