Stupid question about reception (school)

[trunumber]

DS starts school this year. I don't know any children already at school and can't remember when I was there

What do they actually do all day at that age (4-5) Do they most learn through play or is it more structured teaching (like teacher at the front of class) ?

Thanks everyone, I'll focus on the practical

I have a DS in reception...I honestly think the 2 best skills I've taught him are "if you take your jumper off, put it in your book bag" and the same for his snack pot