Thank you Haroldo-ok for the quick reply.
When i end the texts I promise to send you a copy. In this texts i am trying to develop the idea of coding with blocks in ANY SYSTEM. There are blockly for Java, Python, Lua, Flutter, Micropython, also there are a lot of game engines using this "technique" as Stencil, GameMaker, Godot, etc... And YOU are in this groups. The idea of using blocks it's a great idea, giving the posibility to the people TO THINK in the code, more than (if i make a mistake in the sintaxis? where is the error... i cannot find the error!.
That's the idea.
When i end the text, I promise to send you the pdf and the ppt of the class. (I am Teacher/Developer and.... Geologist too, and many other things too like 8bit computer collector) --->a little bit of everything.
By the way, i am ZX Spectrum programmer, and i have the dream to see the blockly mode into an engine for create ZX Spectrum games.
Again, Thank you for replying so soon.