Implement when
students get into conflicts (which could have been resolved by themselves)
a student faces the consequences due conflicts with others
a student has trouble compromising, taking turns, sharing
Twice a term to keep the strategies fresh in the mind (e.g. beginning and end of each term)
(Source: https://education.mn.gov/mdeprod/idcplg?IdcService=GET_FILE&dDocName=MDE071656&RevisionSelectionMethod=latestReleased&Rendition=primary)