Play computer activity is very light on content

[illicitonion]

https://programming.codeyourfuture.io/guides/teaching/activities/play-computer/ could do with a more detailed explanation (and maybe a worked example).

[LonMcGregor]

The link in the issue no longer points anywhere, and the guide I could fine at https://programming.codeyourfuture.io/guides/activities/play-computer/ is empty.

I see the workshop content about this points to https://github.com/CodeYourFuture/CYF-Workshops/blob/main/playing-computer/readme.md

Is this task about pulling the workshop content into a guide, and improving it there, or ditching the guide entirely and improving the workshop block with a better worked example?

[illicitonion]

The idea behind https://programming.codeyourfuture.io/guides/activities/ is to be a collection of links we can easily share with people to give them useful teaching tips/techniques. (It's also possible we just want to delete these, because no one is currently using them, but...)

For playing computer specifically, what we're really looking for is a guide for both trainees and volunteers to know:

• The technique is about reading the code line by line, explaining what it does, and e.g. explaining what values variables will have and what side-effects each line will have, etc
• Slow down. Don't skip over lines, even if they seem trivial or you don't understand them.
• This technique is really useful for making sure people understand code, and for diagnosing gaps in their mental models

Some examples of when we may want to link to this:

1. In that workshop you linked to - we may want to say "go read about this from this guide, then do this activity"
2. When on-boarding new volunteers, or when helping a volunteer who has a question like "How do I work out what they're stuck on?"
3. In the Piscine interview rubric we say "We may ask you to play computer with some code" - linking to the resource to remind people what that means