A suite of GCSE science courses developed in partnership with the University of York

Coursework for Additional Science

This is about the 2006 course. The 2011 course is similar.
See the OCR 2011 specification.

>>Download this information on an A4 mini-poster Additional Science coursework (581 KB).
Teachers may request an A2 size copy of this poster by sending the poster title, their school name and address to OUP at enquiries.scienceatoxford@oup.com

Guidance for your students

Internal assessment of coursework is 33% of your final grade.


Decide exactly what you want to investigate.
Think about any things (factors) which might affect your results, and how to control them.
Try out different ways of doing your experiments to decide which is best.
Consider how much data you need to collect, and plan repeat experiments to check for reliability.
Do some tests to check that you have chosen good ranges to test – report the results.

Collecting data

Work safely – have your plans checked before doing experiments.
Describe how successful you were at controlling outside factors.
Collect data over a good range and repeat to check reliability.
As you do the work, check how well repeat values agree.
Look at the results as you go along – they may show that you should change your plan, and test more or different values.
Work carefully, and accurately – if necessary have few practice goes to develop your skill.

Interpreting data

Use tables, charts, graphs or calculations to show any patterns in your results.
Say what conclusions you can make from your data.
Explain your conclusions using your science knowledge and understanding.


Think whether any improvements in your apparatus or method could give more precise and accurate results.
Check how closely each result fits the general pattern and look for any outliers.
Suggest some improvements or extra data you could collect to be more confident in your conclusions.


Write a full report on your investigation.
Make sure your report is laid out clearly in a sensible order.
Describe the apparatus you used and what you did with it.
Remember to show all units correctly (e.g. cm3).
Take care with your spelling, grammar and punctuation, and use scientific terms where they are appropriate.

Secondary data

Your investigation should be based on the data you collect from your own experiments..
However, you may sometimes want to refer to ‘secondary data’ to support your conclusion or evaluation. Secondary data can come from:

  • other students
  • science books
  • the internet.

Keep detailed notes of each stage of your planning and work. Check each result as you get it to see that it fits in with others you already have – if not, consider whether you need to repeat it to check.

See also

Customer Contact Centre
Tel: 01223 553998
Ask to talk to a Twenty First Century Science officer.

GCSE Additional Science

Assessment of Additional Science

Guide to the OCR website

OCR website