🔍 Key Concepts

• PERT network basics – what events and activities are, and how they are shown • Difference between an activity (task) and an event or node in project scheduling diagrams • What gets numbered on a PERT chart and why

💭 Think About

• In a PERT chart, ask yourself: do arrows show tasks or do circles show tasks? Which one represents the work actually being done? • Think about what needs to be identified by numbers so that you can talk about the order of work (before/after relationships). Is it the work itself or the points in time when work starts/finishes? • Consider what the circles could logically represent if arrows show duration between two points. Are they durations themselves, or something that occurs at the start or end of durations?

✅ Before You Answer

• Verify whether arrows or lines represent the actual task/operation on a PERT chart • Check if events/nodes in PERT are usually numbered for identification of sequence (predecessors/successors) • Confirm whether a duration (how long a task takes) is normally written on a line/arrow or inside the circle/node