this website states the different positions on the field and was they do. Basically explaining the job of each person on the field.

It is related to math because of the different positions and amount of people on the field. How far up the field each position can go, ex. defenders can only go up 2/3 ways up the field.

http://northshoreminorlacrosse.com/field-lacrosse/divisions-and-rules/