Revision planning for Cambridge IGCSE Combined Science (0653) means deciding what to revise, in what order, from which materials, and how you will know it worked. The science itself is covered in the other modules. This one is about the plan around it.
Combined Science 0653 is a single-award course: biology, chemistry and physics together in one qualification. Check the code and the syllabus year on the Cambridge subject page listed below and with your exam centre.
What should you already have before planning?
You need a list of the syllabus statements for your route and year, a rough idea of which ones you can already answer, and a place to record mistakes. The mistake log and retest queue works for the last one. The scientific investigation critic helps with the practical-skills side of the plan.
One orienting example
Here is an invented revision log, not real exam data. A student has 12 hours this week and ticks the statements she cannot yet answer: biology 20, chemistry 18, physics 24, a total of 62.
Her share of hours should follow her need.
Biology: 12 × 20/62 = 3.9 h.
Chemistry: 12 × 18/62 = 3.5 h. Physics: 12 × 24/62 = 4.6 h. The three add up to 12.0 h.
Her first plan gave biology 6 h and chemistry and physics 3 h each, because biology felt friendly. The log says physics needs the most time.
In what order should you study the lessons?
- Audit the three-science balance: turn your tick list into hours, so the plan follows the evidence.
- Reuse a shared concept without duplicating its article: particles, energy and graphs appear in all three sciences, so write them once.
- Locate a reliable current specimen: confirm code, year and route before you trust any paper.
- Track mastered tasks without predicting a grade: count what you can do cold, not what you have seen.
- Prepare linked difficulties for a one-hour trial: bring a short, honest list to a teacher.
What traps catch most students?
The first trap is planning around favourite subjects. The second is treating a completed worksheet as a mastered one. The third is using a paper from a different qualification because the title looks close.
The fourth is turning a percentage into a grade prediction. Your tracker is a mirror of your practice, not a forecast.
How do you use the practice set?
Work through the original mixed practice after the lessons, with a pen and without notes first. Open each answer only after you have written yours. Each wrong answer is routed back to one lesson.
When you are ready to talk it through with a teacher, see online one-to-one Combined Science tuition, where the first step is a paid one-hour trial.