Formal Grouping

Here there is a blog in which you can download the cooperative roles for formal cooperative structures. 

It is very well summarized and children use them very good at class.

https://classonliveblog.wordpress.com/2016/11/15/tarea-de-implantacion-2-diseno-de-una-propuesta-de-roles-cooperativos-y-creacion-de-una-propuesta-de-normativa/

Silvia Valenciaga