Well sure, but if you force feed anything clumsily you can ruin it. We had a nice teacher, and took our sweet time in first grade learning to write the alphabet in first grade. Then it was done. IMO it wasn't "additional material", or material at all, it was part of the fundamental skill set with which to interact with the material. And there wasn't a thought in my mind that it could be any other way, of course you learn to read and write when you go to school.