Which parent would not dream of seeing their child an excellent student? It would seem that there is nothing difficult here: study properly - and an A will be in your pocket. But it was not there! After all, this work – studying – is hard and difficult for a child. Play is much easier and more interesting for him - it is an activity more familiar to him. So we use it to obtain the necessary knowledge, skills and abilities - and the A's will not keep you waiting!