Which of the following are key elements of cooperative learning?

Cooperative learning uses heterogeneous groups whose members work together to master academic material.

Statement 1, mixed groups of high, average and low achievers, is a defining feature of cooperative learning.

Statement 3, students working in groups to master content, captures its interdependent group work.

Statement 2, students being mostly passive, contradicts the active participation cooperative learning demands.

Statement 1V, individually oriented rewards, is wrong because cooperative learning uses group-based rewards.

Statement 5, information coming only from teachers, denies the peer-to-peer learning central to the method.