Play is complicated and the benefits of it don't always standout like a worksheet with 10 nicely traced letter Aa's. Play is deep and meaningful and requires experience and skill to really see what is happening, what is being learnt, negotiated and achieved. Play has to come from the child. It is a choice to do, to try. It can't be produced or packaged.
So let's allow our youngest children to play, to choose, to learn in the way they are meant to because play is the way.