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Subject guides

Study smarter for O Level, AS & A2 — exam technique, mark-scheme tricks and subject guides from the PapaMarks team.

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Subject guides

IGCSE Literature in English 0475: Three Routes, and Texts That Change Every Year

Two students sit 0475 in the same year and take completely different exams — there are three legal routes to the same ce...

Aug 9, 2026 · 14 min read

Subject guides

Cambridge AS & A Level IT 9626: Two Subjects, One Certificate

AO2 is worth 0% of the theory papers and 100% of the practical papers. There is no crossover credit, which makes 9626 tw...

Aug 9, 2026 · 13 min read

Subject guides

Edexcel IAL Further Maths YFM01: The Unit Trap Nobody Warns You About

Six units, only two compulsory, four chosen from nine — and then you look at availability. FP1, FP2, FP3, M3, S3 and D1...

Aug 9, 2026 · 14 min read

Subject guides

The Digestive System in 3D (IGCSE Biology 0610): Free Interactive Model of All 11 Organs

Everyone assumes they know digestion — until an exam asks where bile is made versus where it is stored. Rotate a free 3D...

Aug 6, 2026 · 9 min read

Subject guides

The Heart in 3D (IGCSE Biology 0610): Free Interactive Model, Chambers, Valves & Double Circulation

Your textbook draws the heart once, from one angle — then the exam draws it the other way round. Rotate a free 3D heart,...

Aug 6, 2026 · 9 min read

Subject guides

IGCSE Additional Mathematics 0606: Who Should Take It, and What Paper 1 Really Costs

Two things nobody mentions about 0606: Paper 1 is non-calculator and worth half the qualification, and the grade range s...

Aug 6, 2026 · 15 min read

Subject guides

IGCSE Computer Science 0478: Half Your Grade Is Written in Pseudocode

Paper 1 is 60% recall. Paper 2 is 60% application. Each is worth half the qualification, which is why confident programm...

Aug 5, 2026 · 9 min read

Subject guides

IGCSE History 0470: Two Papers, Two Completely Different Skills

Paper 1 awards nothing for source evaluation. Paper 2 awards nothing for explanation. Cambridge's own assessment tables...

Aug 5, 2026 · 11 min read

Subject guides

IGCSE Maths 0580 vs 0607: Which One Are You Actually Taking?

One takes two papers with a scientific calculator. The other takes three, needs a graphic display calculator, and ends w...

Aug 5, 2026 · 10 min read

Subject guides

IGCSE English 0500 or 0510? The Choice That Follows You to University

First Language English and English as a Second Language are different qualifications with different papers — and on both...

Aug 5, 2026 · 10 min read

Subject guides

IGCSE Geography (0460) Syllabus: The 2027 Rewrite, Explained Topic by Topic

Cambridge IGCSE Geography is restructured from 2027: ten topics, Paper 1 Physical and Paper 2 Human, no skills paper, an...

Aug 3, 2026 · 13 min read

Subject guides

IGCSE Chemistry 0620 Paper 6: Every Qualitative Analysis Test (And Why You Should Not Memorise Them)

Cambridge prints the qualitative analysis table in your exam paper — so memorising precipitate colours buys you almost n...

Jul 25, 2026 · 9 min read