← Years 7–8 Data & Information

Planning a timeline with milestones

A checkpoint on a project timeline, such as a due date for a key task, that shows whether your project is on schedule.

Part of: 7-8 Digital Technologies: Sharing online and managing projects — Module 7

Understanding Planning a timeline with milestones in Years 7–8 Data & Information

What it does: Column A holds the task and column B holds its date, so the task is placed against a date on the timeline. This row names a key checkpoint and gives a date, so the team can check if they are on track. A milestone is a checkpoint on the timeline. It helps you see whether the project is on schedule. A timeline matches each task to dates so you can see when it should start and finish. A good milestone has a clear job and a date. 'Sometime' has no date, so you cannot check it. Spreading milestones out gives you regular checkpoints. You can spot problems early instead of on the last day.

Common mistakes: The due date (10 Aug) is before the start date (16 Aug), so the task would be late before it began. It should be a due date after the start, such as 20 Aug. 31 Feb is not a real date, so the due date cannot be used on a timeline. It should be a real date such as 12 Sep.

Class: _____________________  ·  Name: _____________________  ·  Date: _________

Free printable worksheet with full answer key — or add this module to a class and your students practise it interactively.

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This module's key terms are also in a printable crossword (Modules 87–99) and word search (Modules 87–124).

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Each concept is reinforced from every angle — learned, then applied, then tested.

Learning
Duo
Which best describes a milestone on a project timeline?
A checkpoint that shows a key task is finishedA list of everyone in the team
Matches
A2: Make poster | B2: (blank)
↓
The task has no due date, so it is not placed on the timeline and you cannot tell if it is on schedule.
Applying
Meanings
Term
milestone
Meaning
A checkpoint on a project timeline, such as a due date for a key task, that shows whether your project is on schedule.
Practice
Task,Due date,Milestone
Testing
Gaps
=()
Check Answer
Spots
3Build,6 Aug,15 Aug
4Test,16 Aug,10 Aug

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Quick Questions

1. Which best describes a milestone on a project timeline?
A. A checkpoint that shows a key task is finished ✓
B. A list of everyone in the team
A milestone is a checkpoint on the timeline. It helps you see whether the project is on schedule.
2. A timeline puts tasks against what?
A. Dates ✓
B. Passwords
A timeline matches each task to dates so you can see when it should start and finish.
3. Your group has a poster due on Friday 20 June. Which is a good milestone?
A. Do the poster sometime
B. Research finished by Friday 6 June ✓
A good milestone has a clear job and a date. 'Sometime' has no date, so you cannot check it.
4. On Wednesday your group is meant to have finished the draft, but it is only half done. What does the milestone tell you?
A. The project is behind schedule ✓
B. The project is ahead of schedule
If a milestone is missed or not met yet, the project is behind schedule. The team can then adjust the plan.
5. In a simple spreadsheet timeline, which set of columns would be most useful?
A. Favourite colour, Shoe size, Pet name
B. Task, Start date, Due date, Milestone ✓
A timeline spreadsheet needs the task names and the dates. A milestone column marks the checkpoints.

Match the Pairs

milestone → A checkpoint on a timeline, like 'Draft finished', that shows if your project is on schedule
Due date: Fri 14 Mar → The day a task must be finished by, shown against the task on the timeline
A simple spreadsheet timeline lists each task with its due date in columns → A2: Write script | B2: 10 Mar
A milestone is a checkpoint that shows whether the project is on schedule → Milestone: Prototype tested by 21 Mar
A2: Make poster | B2: (blank) → The task has no due date, so it is not placed on the timeline and you cannot tell if it is on schedule.
Milestone: Do some work → This milestone is vague and has no date, so nobody can check if the project is on schedule.

Key Term

milestone
A checkpoint on a project timeline, such as a due date for a key task, that shows whether your project is on schedule.

Fill in the Blanks

1. =TODAY()
Hint: Type the function name that returns the current date, so you can compare it to a due date.
2. =C2-B2
Hint: Type the operator that finds the number of days between the start date and the due date.
3. =IF(TODAY()>C2,"Late","On track")
Hint: Type the comparison operator that checks whether today is after the milestone due date.
4. =MAX(C2:C8)
Hint: Type the function that finds the latest date in the due date column, which is the project finish date.
5. =COUNTIF(D2:D8,"Done")
Hint: Type the function that counts how many milestones in the status column have been reached.

Spot the Error

Question 1
A Task,Start,Due
B Plan,1 Aug,5 Aug
C Build,6 Aug,15 Aug
D Test,16 Aug,10 Aug
Line D — The due date (10 Aug) is before the start date (16 Aug), so the task would be late before it began. It should be a due date after the start, such as 20 Aug.
Question 2
A Milestone: Draft done
B Due: 31 Feb
C Today: 5 Sep
D Days left = Due - Today
Line B — 31 Feb is not a real date, so the due date cannot be used on a timeline. It should be a real date such as 12 Sep.
Question 3
A Milestone: The whole project
B Due: 9 Oct
C Check: Is it done on time?
Line A — A milestone is a checkpoint along the way, not the entire project. It should name one key task, such as 'Finish research'.
Question 4
A Rule: due = start + 7 days
B B2: 3/9/2025 (start)
C C2: =B2-7
Line C — The rule says the due date is 7 days after the start, so the formula must add 7 (=B2+7). Subtracting gives a date before the start.
Question 5
A Milestone: Draft, due 10 Sep
B Today: 12 Sep
C Draft finished? No
D Status: On schedule
Line D — The due date (10 Sep) has passed and the draft is not finished, so the project is behind schedule, not on schedule.

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