Teach17

Live marking involves checking pupils’ work while they are completing it, rather than taking every book home and adding written comments later. It allows teachers to identify errors quickly, respond to misconceptions and give pupils time to improve their work during the lesson.

It does not mean trying to write in every book or speak to every pupil in every lesson. The most effective live marking is selective. The teacher decides what to look for, checks how pupils are getting on and intervenes where the feedback is most likely to make a difference.

Here are 17 practical ways to use live marking in GCSE Biology, Chemistry and Physics.

1. Decide what you are looking for

Do not try to check every part of every answer. Choose one or two features that are particularly important in that lesson.

You might focus on:

• correct scientific vocabulary;
• substitution into an equation;
• inclusion of units;
• use of data in an answer;
• accurate graph scales;
• explaining rather than describing.

A clear focus makes live marking quicker and more consistent.

2. Scan several books before commenting

Begin by looking at the work of five or six pupils before giving any individual feedback. This will show whether a mistake belongs to one pupil or is appearing across the class.

For example, several pupils may believe that current is used up as it passes through a circuit. Instead of correcting the same error repeatedly, pause the class, address the misconception and ask everyone to check their answer.

3. Check the first independent answer

Try to check pupils’ work soon after they begin an independent task. Correcting the first answer can prevent the same mistake from being repeated throughout the exercise.

During a calculation lesson, check whether pupils have:

1. selected the correct equation;
2. substituted the correct values;
3. rearranged accurately;
4. shown their working;
5. included the correct unit.

A short intervention at this stage may save a pupil from completing an entire page incorrectly.

4. Use a stop-and-fix moment

When the same error appears in several books, briefly stop the class.

You might say:

“Several answers describe what happens to the rate of reaction, but the question asks you to explain it. Add a sentence about the frequency of successful collisions.”

Give pupils a minute to improve their work before continuing. This is often more useful than writing the same comment in several books.

5. Ask pupils to explain their thinking

When an answer is incorrect, avoid immediately telling the pupil what to write. Ask them to explain how they reached their answer.

Useful questions include:

• Which equation did you choose?
• Why is the arrow pointing in that direction?
• What does this scientific term mean?
• Which figure from the graph supports your answer?
• What happens to the particles?
• How do you know?

A pupil’s explanation often reveals the exact misconception more clearly than the written answer alone.

6. Mark calculations one stage at a time

Do not treat a calculation as simply right or wrong. Identify the stage at which the pupil has made the error.

For example:

• equation correct;
• substitution incorrect;
• rearrangement correct;
• unit missing.

You might write a brief prompt such as:

“Check the conversion from centimetres to metres.”

This helps pupils understand their method and makes it less likely that they will repeat the same mistake.

7. Make units part of every calculation check

Missing or incorrect units are common in GCSE Science. Train pupils to see the unit as part of the answer rather than an optional extra.

Instead of adding the correct unit for them, use a prompt such as:

• Unit?
• What quantity have you calculated?
• Should this be joules or watts?
• Have you converted the value first?
• Check the prefix.

Frequent checks help pupils become more confident with metres and centimetres, grams and kilograms, and seconds and milliseconds.

8. Check graphs in stages

Do not wait until a pupil has completed an entire graph before looking at it. Check it at key stages:

1. axes;
2. quantity and unit labels;
3. scale;
4. plotting;
5. line or curve of best fit;
6. conclusion.

A quick check of the scale at the beginning can prevent a pupil from having to redraw the whole graph later.

9. Correct diagrams while pupils are drawing

Live marking is particularly useful for scientific diagrams because small errors can change the meaning.

Check for:

• circuit symbols rather than pictures;
• voltmeters connected in parallel;
• ammeters connected in series;
• force arrows beginning on the object;
• ray diagrams drawn with a ruler;
• arrows showing the correct direction;
• accurate biological labels;
• correct particle arrangements.

Ask the pupil to correct the diagram rather than redrawing it for them.

10. Give feedback during practical work

Live marking does not have to involve writing in exercise books. Practical work provides many opportunities for immediate feedback.

You might comment on:

• reading a scale at eye level;
• controlling variables;
• repeating measurements;
• identifying an anomalous result;
• using equipment safely;
• recording results to consistent precision;
• choosing a suitable range;
• explaining why a control variable matters.

A quick correction during the practical is usually more valuable than mentioning the problem after the equipment has been put away.

11. Draw attention to the command word

When marking an exam-style answer, check whether the pupil has responded to the command word.

For example:

• Describe means state what happens.
• Explain requires scientific reasons.
• Compare requires similarities or differences.
• Evaluate requires consideration of evidence and a judgement.
• Calculate requires a numerical method.
• Suggest requires pupils to apply their knowledge.

A scientifically correct answer may still lose marks if it does not answer the question that was asked.

12. Use small parts of the mark scheme

After pupils have attempted an exam question, show them the relevant section of the mark scheme.

Avoid giving them the whole mark scheme immediately. Focus on a small number of marking points and ask:

• Which point have you included?
• Which point is missing?
• Where is the evidence in your answer?
• Have you contradicted yourself?
• Is your wording scientifically precise?

This helps pupils understand how marks are awarded without encouraging them simply to copy the mark scheme.

13. Give a question rather than the answer

A useful piece of live feedback is often a question.

Instead of writing:

“Particles move faster.”

Ask:

“What happens to the kinetic energy of the particles when the temperature increases?”

Instead of writing:

“You need to mention resistance.”

Ask:

“How does the increased resistance affect the current?”

This requires the pupil to think, retrieve the science and improve the answer themselves.

14. Use a small number of marking codes

A simple set of codes can make live marking quicker.

For example:

• U – add or correct the unit;
• V – improve the scientific vocabulary;
• E – add a scientific explanation;
• C – check the calculation;
• D – include data;
• Q – return to the question;
• MS – check the mark scheme;
• R – rewrite this section.

Keep the system simple and display the codes in the classroom. Pupils should know that a code requires an immediate response.

15. Give pupils time to respond

Live marking is of little value if pupils read the feedback and continue without changing anything.

Build short correction periods into the lesson. Pupils might:

• correct a calculation;
• add a missing reason;
• improve one sentence;
• redraw part of a diagram;
• insert evidence from a table;
• add the correct unit;
• answer a follow-up question;
• complete a similar question.

The correction does not need to be lengthy. It simply needs to show that the pupil has understood and acted on the feedback.

16. Model peer and self-marking

The teacher does not need to personally mark every answer. Live marking can be used to teach pupils how to check work accurately themselves.

Mark one answer with the class and explain how you are applying the success criteria. Pupils can then use the same process to check their own work or a partner’s response.

Peer assessment works best when pupils have:

• a clear model answer;
• a short checklist;
• specific marking points;
• an opportunity to discuss disagreements;
• time to improve their own answer.

Avoid simply asking pupils to swap books and give each other a mark without guidance.

17. Record patterns across the class

Keep a class list, seating plan or blank sheet with you while circulating. Briefly record the main issues you notice.

These might include:

• confusing mass and weight;
• missing units;
• weak evaluation conclusions;
• inaccurate circuit diagrams;
• difficulty rearranging equations;
• describing data without using figures;
• misunderstanding variables.

Use these notes to decide whether to reteach something immediately, change the next activity or begin the following lesson with a targeted retrieval question.

A Simple Live-Marking Routine

A manageable routine could be:

1. Set a short independent task.
2. Choose one or two features to check.
3. Scan several books before commenting.
4. Identify any common misconceptions.
5. Pause and reteach where necessary.
6. Give selected pupils a short prompt, question or code.
7. Allow time for corrections.
8. Record any patterns that need revisiting.

You will not reach every pupil in every lesson, and that should not be the aim. Rotate your focus across the class and prioritise work that reveals a significant misconception, a repeated error or a pupil who needs help getting started.

Live marking works best when it becomes a normal part of circulation during independent work. A missing unit can be corrected before the next calculation, an inaccurate graph scale can be fixed before the points are plotted and a weak explanation can be improved while the pupil is still thinking about the science.

The aim is not to fill books with evidence that marking has taken place. It is to notice what pupils are doing, help them improve it and use what you see to guide the rest of the lesson.