Being wrong, can make you better at being right

Currently I am busy with year 13's on the topic Learning Programming.  I have been teaching a mix on on-line and individual "help as they ask" lessons on the statistics topics. Now I am doing a mix of Hapara Workspace and old-fashioned talk and chalk lessons with hands on activities for the students.
Interesting that after we spent a whole lesson doing graphs by hand, without any technology to get this comment from one of the boys:  "whaea Mina, by the way, this was the best lesson ever!! Was so good to have a lesson with you showing us how, and we doing it without technology"

The thing is:  They are allowed to use technology to sketch the graphs, but I thought to do a few lessons without technology, would actually enhance their understanding of the topic. Trying , getting it "wrong", trying again, getting those AHA moments when they succeed, and feeling accomplished by doing it by hand!!
Being wrong, can make you better at being right.

My motto remains:
The power of YET,
I can't do it YET
I can't sketch the graph YET
This does not work YET
I am not good at this YET
I don't know the answer YET
I don't understand this YET

A new for me, to let some of them go out today, while I could see that they don't get it YET..

Today I've read this article and found it a good fit, for what I am trying to achieve with my lessons today.