Homework that takes too long: telling slowness, gaps and poor method apart

1. Three different problems can produce the same never-ending homework

Saying “I’m slow” describes a result, not its cause. Before changing working methods, you need to look closely at where the minutes are going.

What you observe	Main hypothesis	What to test
The student knows what to do and usually succeeds, but each step takes them a long time	Slow execution or automatic skills not readily available	Compare their time on a few simple, familiar tasks
The student stays stuck, keeps going back to their notes or does not know how to start	A knowledge gap or a missing prerequisite	Test the concept needed for the exercise separately
The student knows the lesson when questioned but spends a lot of time rereading, copying out, highlighting or working out how to work	A method poorly suited to the task	Close the material and ask them to recall, explain or apply
Time disappears mainly between tasks: phone, moving around, constantly switching materials	An organisation or environment problem	Measure only the time actually spent on the task

This distinction avoids a common mistake: applying a productivity technique to an academic gap. A timer does not solve an equation that has not been understood. Conversely, redoing a whole chapter does little for a student who already knows their lesson but spends twenty minutes copying it out before each exercise.

The first step of a good method for helping with homework is therefore less about speeding up than about diagnosing the nature of the slowdown.

2. Why rereading for a long time can feel like work without solving the problem

Rereading a lesson can be useful for understanding a passage, finding information or checking a concept. The problem arises when rereading becomes the main way of deciding whether the lesson has been mastered.

Seeing the same page several times gradually makes the content familiar. But recognising information when it is in front of you is not the same as being able to retrieve it or use it without support. A study by Karpicke, Butler and Roediger on learning strategies described precisely the “illusions of competence” that can arise during study when students assess their mastery without really trying to retrieve the information.

A major review published by Dunlosky and his co-authors also evaluated several common techniques. It ranked practice testing — of which maths flashcards are one form — and distributed practice among the approaches with the highest overall utility, while repeated rereading received a lower rating. This does not mean rereading should be banned: above all, it means it should not be the only test of mastery. The full review is published in Psychological Science in the Public Interest.

For homework, the consequence is very concrete. After the few minutes needed to understand the lesson, the student must produce something without looking: answer a question, explain a mechanism, recall a formula or start an exercise. This is exactly what NOEO’s method for turning a private tutoring session into a revision sheet, flashcards and a quiz sets out to do.

How active recall, flashcards and quizzes as a tool for detecting gaps work is covered in detail separately. Here, the main question is when these methods can stop homework from dragging on needlessly.

3. The 15-to-30-minute protocol for finding where time is lost

This protocol is not a scientifically optimal working time. It is a short diagnostic unit: long enough to do real work, but structured enough to observe what is getting in the way.

Step 1 — 2 to 3 minutes: define the task precisely

Before opening several materials, the student states what they need to produce:

• “I need to be able to explain this concept without my notes.”
• “I need to solve exercises 4 and 5.”
• “I need to know ten vocabulary words.”
• “I need to build the outline of this answer.”

A task such as “work on history” or “do maths” is too vague. It makes it hard to know when the work is finished and encourages pointless detours.

Step 2 — 3 to 5 minutes: try before rereading everything

The student closes or turns over their notes and makes a first attempt at recall: writing down what they know, explaining aloud, answering a few questions or starting the exercise.

This step is essential because it turns an impression into observable information.

If they can recall almost nothing, they probably need to go back to the lesson. If they know the concept but cannot apply it, the problem is different. If they succeed, but very slowly, on a basic task, a lack of automaticity may be the cause.

Step 3 — 5 to 10 minutes: deal only with the block identified

The material is then reopened, but with a precise question.

Instead of rereading three pages, the student looks for the step they were unable to produce. Instead of redoing fifteen exercises, they go back over two examples focused on the difficulty observed.

This logic corresponds to a metacognitive approach: planning, monitoring what works and then adjusting strategy. The Education Endowment Foundation’s 2025 guidance on metacognition and self-regulation recommends precisely that students be explicitly taught to plan, monitor and evaluate their learning, in the context of the subjects they are actually studying.

Step 4 — 5 to 10 minutes: redo it without help

After the explanation comes the real test: closing the material again and trying.

If the student now succeeds alone, they can move on. If they only succeed by keeping the example beside them, the concept is probably not yet sufficiently available. If they know the approach perfectly but are still very slow, a few short tasks aimed at building automaticity may be more relevant than a whole new explanation.

Step 5 — 2 minutes: decide what comes next

At the end of the block, the student notes a single decision:

• “I can move on to the next exercise.”
• “I need to review this definition.”
• “I understand but I still lack speed.”
• “I still don’t understand this step: I need to ask for help.”

The aim is to prevent an unresolved difficulty from turning forty extra minutes into a repetition of the same block.

4. Example: a chapter learnt for 45 minutes but still hard to recall

Take a student who has to learn an SVT (Life and Earth Sciences) chapter. Their usual method is to read the lesson, highlight, reread the important passages and then do one last read-through. After 45 minutes, the document feels very familiar. Yet when asked to explain the main mechanism without looking, their answer remains incomplete.

The problem is not necessarily intellectual slowness or an insufficient amount of work. The homework mainly measures their ability to stay in contact with the material for a long time, whereas the assessment will probably require them to retrieve and use this knowledge.

The same work can be restructured as follows:

1. 5 minutes to read and understand a first section;
2. 3 minutes with notes closed to reconstruct it from memory;
3. 3 minutes to compare with the lesson and correct omissions;
4. 5 minutes to explain the mechanism in their own words;
5. 5 to 10 minutes to answer questions or use it in an exercise.

The total time is not necessarily much shorter on the first attempt. The difference is that each step provides information: what is understood, what has been forgotten and what is still hard to apply.

This is also why practising retrieval can be useful: in an experiment published in Science by Karpicke and Blunt, retrieval practice produced better learning outcomes than elaborative study with concept maps under the conditions studied. This research does not mean that a single protocol suits all homework; above all, it shows the value of having the student produce the information rather than simply presenting it to them again.

5. How NOEO can support this method between two sessions

Tools do not replace diagnosis. Their main value is to reduce the time needed to find the right starting point and to check what is still mastered after a session.

After a NOEO session, the Session report can, among other things, record the topic covered, the key points, the areas for improvement and the work set by the tutor. The student can then start their homework from a more precise objective rather than working out alone what they were supposed to go back over.

When recording has been authorised, the session replay remains accessible for 3 months. It can be useful when a particular explanation needs to be found again, provided the whole session is not rewatched by default. An effective way to use it is to locate the passage needed, review the explanation, then close the replay and try to redo the work alone.

The student can also choose to create a Learn pack from an eligible session. It contains a revision sheet, flashcards and a quiz. The revision sheet can be used to find an explanation again or structure a concept; the flashcards and quiz can help check what is still available without constantly rereading the material.

Any exercises set by the tutor remain separate from the Learn pack and go through the session follow-up. The pack is not created automatically: the student decides for themselves to generate it when they want to extend their work.

The full journey before, during and after each session is set out on the How does NOEO work? page.

6. Mistakes that make homework last longer without bringing more progress

Rereading everything before starting. A few minutes of reading may be necessary, but it is often more informative to have a quick try to identify what really needs revisiting.

Confusing difficulty with slowness. Spending fifteen minutes on a question because you do not know the prerequisite cannot be fixed simply by trying to go faster.

Multiplying identical exercises. As soon as the method is understood, you need to check that it can be chosen and applied in a slightly different situation.

Keeping the correction open. Following a solution step by step can create an impression of ease. Closing it and starting again from the beginning gives a better picture of how independent the student is.

Doing several things at once. When a block of work is constantly interrupted, the total homework time says little about the academic difficulty itself. To diagnose the problem, you need to observe a few minutes of genuinely continuous work.

Turning every block into a long session. When a difficulty persists after several targeted attempts, noting down precisely the question to ask a teacher can be more useful than spending another hour repeating the same approach.

7. How can you check that homework is genuinely becoming more efficient?

The right indicator is not just “I finished faster”. Homework can become very short simply because it has been rushed. You need to measure both the time taken and the quality of the work produced.

Indicator	Question to ask yourself
Getting started	Do I know more quickly what I need to do?
Independence	Can I start without immediately looking at an example?
Retrieval	Can I recall the important information without my notes in front of me?
Application	Can I use the concept in a different exercise or question?
Diagnosis	When I get stuck, can I explain precisely why?
Time	Does a comparable task gradually involve less pointless hesitation?

A method can be tried out over a few comparable pieces of homework before it is judged. If the student is working more actively but is still stuck in the same place, the difficulty may lie less in their organisation than in a gap that needs explaining. If the knowledge is there but time is still being eaten up by unhelpful steps, the method needs simplifying.