This piece is simply a collection of center type activities I have used over the years that the students voted on as among the best. Having worked in multi-age classrooms for decades, incorporating "centers" into my routine was mandatory. Also because promoting and developing co-operation between sets of partners and groups was one of my MAIN focuses, centers like these helped me to accomplish that.
This is a list and brief description of 18 centers, They are not grade specific and support curriculum outcomes on a variety of levels. I have used these in classrooms from "grades" 1 to 6 adapting as necessary. I'm certain that at least some of these will help to enhance your classroom.