A quick idea.
A cheap way to get digital education was to use a projector or ?TV. Then to make it interactive I would see if a wireless USB Pen Mouse could work. For writing or drawing. You don’t run the pen mouse on the projector screen or TV but on a table. Since the pen mouse is pretty inexpensive I think it could be an idea.
Then I wonder. Could a wireless pen mouse and a phone/tablet replace paper and pen? The problem I had not realised was that you don’t need to write on the screen. Better to use the large space of an empty table and transfer the pressed movement to the mobile screen. This way you have a pen with different colors and lots of large virtual paper.