Hi Daisy,
Reception in changing, as will Year 1, and I think there will be more and more posts like yours over the next few years as the new Early Years curriculum gets more implemented in schools.
There is going to be an increasing focus on play in Foundation Stage, adn Year 1 is seen as a transition year rather than fully into the formality of KS1.
This could be good - well organised, structured play sessions can extend children's learning incredibly (you only need to think of role play areas as shops, cafes, post offices, travel agents etc to see the potenetial for loads of maths learning).
But the problem is that in many schools I have been in lately it is not being implemented in this way and the children are given a lot more free play than they have in the past, and this free play is not carefully structured and differentiated and does not have sufficient adult input to extend each child at the appropriate level.
A good constructive play environment is incredibly hard to achieve, and I have seen few that are managing this change in curriculum well. It won't help children who are 3-5 yrs at the moment, but I can't see it lasting. The emphasis will have to change again, or else a lot of infant teachers are going to have to have a lot more training.
Just my view, but a fairly well informed one.