Ow are PERT, Triple Constraint, and Critical Paths Related to Project Management

Assignment a Project Management
a? Do a Literature Search (Internet, articles, books ..) for PERT, Triple Constraint & Critical Path and find out how they are related to Project Management. Write a 250 word (maximum) summary of each topic and its relationship to Project Management.
a? Prepare and construct a Work Breakdown Structure for an assignment you are currently working on such as a work related project, thesis project, class term paper/project and the like.