This revolved around how to teach a child to read would. Michael used context with his children - read on and see if that gets you to the word. My reply was that this worked sometimes, but depended on being able to read the context, which a weak reader was less likely to be able to do. I added that if I did use this approach, I would explain the connection between would, could and should, so as to begin to build a mental network.
But what was the connection? Would and should, have a Germanic origin containing an l, which is retained in the modern equivalents, wollen and sollen. Could is different - the squire in Chaucer's Prologue coude do several things, with no l in sight. The OED tells us that, around 1525, its spelling was changed to match that of would and should, an arbitrary decision, but which at least gives us a group of three words rather than two, and so makes the whole easier to learn, once it is explained. Very easy to reinforce with all sorts of games for adults and children.