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Choosing your IGCSE science route

Some students study three separate sciences, others one combined course, and the labels on school paperwork are easy to mix up.

On this page
  1. How do the routes relate?
  2. How do I work out which route I am on?
  3. What about practical work?
  4. Where do I go next?

Cambridge science at IGCSE comes in three shapes. You can study Biology 0610, Chemistry 0620 and Physics 0625 as separate subjects, Combined Science 0653 as a single-award course, or Co-ordinated Sciences 0654 as the double-award route. All of them draw on the same three disciplines, but they are not interchangeable.

How do the routes relate?

The separate sciences give each discipline its own syllabus and its own exam grade. Combined Science 0653 brings biology, chemistry and physics into one course, so a student covers the three disciplines together in one qualification. Co-ordinated Sciences 0654 is also an integrated course, but it is the double-award version, with its own scope and its own integrated assessment.

Because the integrated courses and the separate subjects cover overlapping ideas, such as cells, atoms and forces, a skill learned in one route helps in another. Scope, depth and exam style still differ, so revise from the syllabus for your code.

How do I work out which route I am on?

  1. Ask your school which science codes you are entered for and for which exam year.
  2. Look at your timetable: one combined science lesson pattern or three separate subject teachers points to an answer, but check with the school to be sure.
  3. Open the Cambridge page for that code and read the syllabus overview.

If you are still choosing, think about what you want to study after IGCSE and ask the institutions you are considering what they require. The school’s offer also limits the options.

What about practical work?

Practical and assessed work must be your own and is supervised by your school or exam centre. Tuition can explain the ideas behind experiments and how to handle data, but it does not replace the supervised part.

Where do I go next?

Choosing subjects for support helps if you are deciding which science needs attention first.

Questions people ask

Is Combined Science 0653 the same as Co-ordinated Sciences 0654?

No. Combined Science 0653 is a single-award course, while Co-ordinated Sciences 0654 is the double-award route. Their scope and integrated assessment are different. Ask your school which code you are entered for and read that code's syllabus page on Cambridge.

Are separate sciences harder than combined science?

Separate Biology, Chemistry and Physics each go into their own subject in more depth than a single combined course can. That means more content to learn, not simply harder questions. Which route suits you depends on your school's offer and your plans for later study.

Can I choose my science route myself?

Usually the school decides which science routes it teaches and enters students for. Ask your science teacher what the options are. Entry and registration belong to your school or exam centre, so raise any change with them early.

Does a science route affect what I can study later?

It can, because some courses ask for particular science subjects. Check the requirements of the courses you are considering directly with the institutions. We can help you study whichever route you are in but cannot confirm admission rules.

Sources

  1. Cambridge IGCSE Combined Science 0653 subject page

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