ok, thanks

no, feel free to assign it to yourself if you want to work on it

Is this issue taken?

Just a note to say I've restarted working on this activity for the next major release. I first ported locally the old branch to Qt6 and adapted it to other of our changes, but there are still too many bugs...
So now I'm restarting it almost from scratch, with the goal of reaching a cleaner and bug-free code. With useful reference from the old branch it should be relatively fast.

https://invent.kde.org/education/gcompris/-/merge_requests/175

yes, at higher levels it would be nice to have to handle 2 or 3 blocks of tens

@echarruau Do we want to support multiple blocks of tens complement like we have in Tens Complement Swap?

Done by Bruno in https://invent.kde.org/education/gcompris/-/commit/24e08efd73ae93c663fe03be830516afd31447f8 and https://invent.kde.org/education/gcompris/-/commit/1d9d06f1888942ea46c6d63a1c760dcad7d27cd4

Done by Bruno in https://invent.kde.org/education/gcompris/-/commit/af556053b55284ed878b995dac045a0d3df45bc4

Hello,
I have attempted something: https://invent.kde.org/education/gcompris/-/merge_requests/154

It is a nice idea.
It could also be
1,2,?,4,? for preschool or
6,5,?,3,2

HI,
This is very interesting, and opens many possibilities.
I would think of something more generic without a train, much more what we ask the pupils to do.

yes, house numbering is also a great idea! Regarding the theme, @timotheegiet will be able to give more insights as he is the one in charge of the graphics/theme.
The code should not change much depending on if we do houses or wagons

I was thinking about it a little more (trying to find a logical theme where numbering is something not weird as numbering on a caterpillar :D) and found that we could use the theme of house numbering (as in a street). But,using locomotive and wagons is totally fine (and can also work with letters).

If we go this path, we already have a locomotive and wagons for click_on_letter, it could be nice. Also regarding multiple answers, we have some components (AnswerButton in src/core) in missing_letter that could be reused.

Not really. The one that I know (from book) is just showing a table as follow:

The idea is interesting, do you have any idea on how to make it teacheable/playful (more than just displaying a question and an input text)?

WIP in https://invent.kde.org/beroot/gcompris/-/commits/grammar_analysis