Aptitude skill lesson

Planning and scheduling exercises: skill lesson

Learn to build a feasible schedule from dependencies, resource limits, deadlines, and uncertainty. A strong plan makes the critical sequence visible and includes triggers for replanning.

Published · last reviewed

Applies to Novus Learn 0.1.0

What changed, and when
  1. , Replaced the body of all 27 non-judgement lessons with construct-specific material: six worked examples each, carrying the actual arithmetic, the actual inference or the actual procedure, plus expanded objectives, practice tips and glossary. Every 'Related Learn topics' link now points at a real page on this site rather than a generic search. The eight workplace-judgement lessons are unchanged.
  2. , Rebuilt the lesson page around a sticky contents rail, per-section links, previous/next lesson navigation, and two graded checkpoints drawn from the open practice bank.
  3. , Repaired the aptitude integrations behind the lessons so each one links to skill-specific practice instead of the unscoped fixture engine.
  4. , Published one lesson for each of the 35 aptitude skill constructs: objectives, worked examples, practice tips, glossary, Learn topic links, and sources.

These 35 skill lessons are authored and revised as one set, so they share one revision history rather than 35 identical dates.

Objectives

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  • Convert a task list into durations, predecessors, resource needs, milestones, and constraints.
  • Identify the chain of dependent tasks most likely to control the finish date.
  • Add proportionate buffers, checkpoints, and contingencies without hiding an impossible deadline.

Checkpoint: does the idea land?

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Before the worked examples, check that the objectives above actually landed.

Two questions from the open practice bank, answered here and scored on this device. Untimed, ungraded, and not added to your practice history, the full bank is where attempts are recorded.

1. Task A takes 2 days and must finish before task B, which takes 3 days. Task C takes 4 days and depends on nothing. Enough people are available to run A and C at the same time. What is the shortest possible duration?
2. Task A must be complete before task B can begin. What is that relationship called?

Examples

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Worked scenario: a four-hour shutdown

Inspection takes 30 minutes before either repair can start. Two repairs take 90 and 120 minutes, but both need the same technician; testing takes 45 minutes after both finish. The minimum sequence is 30 + 90 + 120 + 45 = 285 minutes, longer than the shutdown. The correct response is to surface the conflict and change scope, staffing, or window, not to place overlapping bars on a chart and call the plan feasible.

Dependency and contingency check

Draw arrows between tasks, then mark scarce resources and approval gates. For the highest-risk dependency, define an early warning and a response: for example, if a permit is not approved by noon, defer nonessential work and notify the owner rather than discovering the conflict at start time.

Checkpoint: can you apply it?

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Now apply it. These come from a later section of the bank, so they are not more of the same.

Two questions from the open practice bank, answered here and scored on this device. Untimed, ungraded, and not added to your practice history, the full bank is where attempts are recorded.

1. What is the critical path?
2. A task with 3 days of float slips by 2 days. What is the effect?

Practice tips

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  • Check resource conflicts as well as task order; parallel work is impossible when both tasks need the same person or asset.
  • Protect the completion milestone with visible review points, not an unexplained buffer at the end.
  • When a constraint makes the plan impossible, state it early and propose the smallest viable change.

Open skill-specific practice

Glossary

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Dependency
A rule that one task or milestone must precede or enable another.
Critical path
The dependent task sequence that determines the earliest possible finish under the stated plan.
Slack
The time a task may move without delaying a dependent milestone or final completion.

Sources

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  • Novus Learn original scheduling, project-coordination, dispatch, and operations suite scenarios.
  • Novus educational framework: tasks, durations, dependencies, resources, constraints, milestones, and contingencies.

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