This assignment for PPMP20013 Course Portfolio Week 5 focuses on understanding and applying estimating processes and concepts in project management. It delves into different types of estimates (preliminary, appraisal, proposal, approved, pre-tender, post-contract) made at various project stages, highlighting their objectives and the rationale behind each estimation type. The assignment also discusses the importance of estimation in predicting program timelines, identifying risks, establishing assumptions, and forecasting project expenditures. Supporting readings include Levy (2012), Smith (Chapters 8,9 & 10), QLD Dept. Transport and Main Roads (2015) Project Cost Estimating Manual, and Kerzner H. (2013).