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Module 1 · Lesson 1 · Core

What makes a project: purpose, limits and the three constraints

Tell a project from routine work and state its goal, its limits and its owner.

  • 55 minutes
  • Serves O1
  • No prior lesson needed

Phase 1: Prepare

Step 1 Warm-up recall

Name one piece of routine work and one project you have seen at work, and say how they differ.

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Step 2 Learning goal

By the end of this lesson you can:

  • state what makes work a project (Foundation);
  • describe scope, time and cost as constraints (Core);
  • write a one-sentence goal (Core).

Phase 2: Teach

Step 3 A familiar example

Processing invoices every week is routine. Moving the accounts team to a new system by March is a project: it has an end, a purpose and a change to deliver.

Step 4 Clear explanation

A project is temporary work to deliver a specific result. It has a start and an end, a purpose, limits and an owner. Routine work repeats; a project ends when its result is delivered.

Purposeand goalScopeand deliverablesScheduleand pathRisksand plansControland review
A project moves from a clear purpose to scope, schedule, risks and control; each step feeds the next.

Every project is limited by three linked constraints.

ConstraintQuestion it answersTypical trade-off
ScopeWhat exactly will be delivered?Adding scope usually adds time or cost
TimeBy when?Squeezing time usually adds cost or cuts scope
CostWith what budget and effort?Cutting cost usually cuts scope or stretches time

Because the three are linked, changing one usually moves another. Experienced leads therefore agree the priority at the start: which of scope, time and cost is fixed, and which can flex. A good goal is one sentence that says what will be delivered, for whom and by when, for example: “Move the 20-person accounts team to the new system by 31 March without missing a payment run.” The article on defining project scope and managing risk expands on this.

Step 5 Worked example (4 marks)

Improve the goal “make the intranet better”.

  1. It does not say what will be delivered. (1 mark)
  2. It names no user or deadline. (1 mark)
  3. Rewrite: “Relaunch the staff intranet with a new search and layout for 300 staff by 30 June.” (1 mark)
  4. Which constraint is fixed? The date; scope may flex. (1 mark)

Phase 3: Practise

Step 6 Learner practice (instant-marked)

1. Which is a project?

2. The three linked constraints are scope, time and:

3. Adding scope while holding the date usually:

4. A good goal states what, for whom and:

Phase 4: Close

Step 7 Recap

  • A project is temporary work with a purpose, limits and an owner.
  • Scope, time and cost are linked constraints.
  • A good goal says what, for whom and by when.

Step 8 Exit ticket (ungraded)

Write a one-sentence goal for a project you could lead.

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Step 9 Go further (Extension)

Read Defining Project Scope and Managing Risk and note one thing it adds.

Common mistakes

MistakeWhy it fails
A vague goalState what, for whom and by when.
Treating all three constraints as fixedAgree which can flex.
No named ownerSomeone must be accountable.

Limits. Different organisations use different words for these ideas; the concepts are the same.