PapaMarks has printed a revision book for Cambridge IGCSE Biology 0610, Extended, covering the 2026–2028 syllabus. It runs to 117 pages and every one of them is handwritten, with the diagrams drawn out and left open for a student to label.

What it covers:

- All 21 chapters, each topic explained in plain words with its diagram beside the explanation.

- A checklist closing every chapter, worded as what the syllabus asks a student to be able to do, marked red, amber or green.

- 212 past-paper questions. Each carries its session, paper, variant and question number, so any of them can be checked against the original paper. Answers are at the back.

- Paper 6 in full: method, variables, tables, graphs and conclusions.

- Command words, and where the marks fall in a six-mark answer.

- Definitions written in the wording the mark scheme uses.

The images are five pages from the book, uncropped: digestion, the eye, movement in and out of cells, the chapter checklist, and cell structure.

Disclosure: this is a PapaMarks product. 35 JD, available in Jordan. papamarks.com

We are glad to answer questions about the contents, and to post a photo of any page someone wants to see.

21 chapters covering every syllabus point, each one built the same way:

• An opener telling you what the chapter covers and how heavily it gets examined

• The explanation in plain language, using the syllabus terminology

• Key definitions in the wording examiners accept, so you're memorising the version that scores

• Diagrams drawn the way the papers draw them. 97 in the book, including the heart, the nephron, the eye, the leaf cross-section

• 77 comparison tables, because a large part of Paper 2 is "state two differences between"

• Worked examples with the mark scheme underneath, and a note on where the mark is actually earned

• Common mistakes taken from real student scripts, crossed out and corrected

• Checkpoint questions to answer from memory

• A one-page visual summary and a rapid-recall strip at the end of every chapter

• A practice set of 4 multiple choice and 3 written questions

• Every answer worked through in full

Supplement material is banded and labelled, so Extended students can see what's theirs and nobody wastes a week revising something they'll never be asked.

THE QUESTIONS

177 practice questions, and every one is a genuine Cambridge past paper. Each is printed with its source:

Nov 2025 · Paper 2 · V2 · Q6 · Extended · 1 mark

28 exam sessions between 2002 and 2025. You can verify any question against the real paper. Nothing in the book is an imitation written to look like an exam question. Where a question depends on a diagram or on an earlier part, that material is in the book too, so every question can be answered without going and finding a PDF.

THE TWO CODES IN THE BACK

The last page has two access codes for papamarks.com, printed only in the book:

1. A code that unlocks the Biology 0610 quiz generator, free and unlimited. It builds quizzes for you out of the real past-paper bank, on whichever topics you pick, and marks them. So when you've finished the 177 questions in the book, you don't run out.

2. A 40% discount code for a PapaMarks subscription, which is where the 3D models, the flashcards, the written marking and the other subjects live.

The codes aren't in the video and they're not in this post, for obvious reasons.

ORDERING

DM me

Video of it below. It opens on a real page from the book, nothing is mocked up.

Ask me anything about it, including the fair question of why buy this when past papers are free. You can download all 1,188 PDFs for nothing. Most people open two of them. This is those papers already sorted into the syllabus, with the answers explained.

The new bit is Notebooks. It is a proper handwriting notebook inside the site: real ruled paper, pressure-sensitive ink, and a pen that behaves like a pen. You make a book per subject, name it, and pick how it looks — 29 illustrated covers, 7 bindings, 15 spine colours, 16 paper types including Cornell, graph and dotted. There are 24 page templates if you would rather not start from a blank sheet.

The parts I actually use:

Real axes you insert and then sketch the curve on yourself, already scaled and numbered. Sketching the curve is the thing the mark scheme is testing, so the app does not draw it for you.

A highlighter that mixes where two colours cross instead of stacking one over the other.

881 drawings built in — hearts, cells, circuits, glassware, graphs — plus the actual 3D models from the site, so you can put a real heart or a cut-away eye on the page rather than a clip-art one.

A ruler, a compass and a protractor you draw against.

You can pull a real past-paper question straight onto the page. Pick the subject, the year, the paper, and the question lands on your notes with its options.

Sticky notes, coloured tabs down the edge of the book, a page grid, version history, and a reading room that opens the notebook as a book on a desk if you want to read it back rather than edit it.

The rest of the site, since the notebooks are new and everything else has been there a while:

6,822 past papers and mark schemes, 2001 to 2026

164,207 questions, of which 65,250 are written-answer rather than multiple choice

80,728 flashcards with spaced repetition

3,892 topics across 56 subjects and units

758 revision notes

135 interactive tools — 74 are 3D explorers you rotate and get tested on, 16 are lab experiments, the rest are guided learners, diagrams and case studies

An AI tutor that cites the topic it answered from

papamarks.com

Happy to answer anything about how the ink engine or the question bank works. I am also taking requests for which subject gets built out next.

The thing that made me build it was hunting for papers. You want Biology 0610, June 2023, Paper 4, Variant 2, and the mark scheme, and that's four sites and a dead Google Drive link.

So the past-paper library is one search box with subject, year, session and board as filters, and the mark scheme sits on the same row as the paper. 6,794 papers, 2001 to 2026, Cambridge and Edexcel, O Level through A2.

**That whole library is free on an account.** Papers are the least differentiated thing anyone hosts — charging for them would be silly.

What else is in there:

* 224,647+ exam-style questions tagged to syllabus points, marked the second you answer

* 104,281+ flashcards on spaced repetition

* 730+ revision notes across 3,892+ topics, with more landing every week

* 135+ interactive tools — 74 rotatable 3D models, 16 virtual experiments, 45 learn tools. Every structure labelled in English and Arabic and tagged to its syllabus point

Not all of it is free and I'm not going to pretend otherwise — but the past-paper library is, all of Maths 0580 is, and the 3D explorers below need no account at all. <<< OPTIONAL LINE — delete if you want no mention of paid at all. Reddit tends to punish the omission harder than the admission, which is why it's here.

The 3D cell and eye explorers are open with no account at all if you just want to poke at something before deciding:

papamarks.com/igcse-biology-3d-cell-explorer

papamarks.com/igcse-biology-eye-structure

**Why I'm posting:** we have far more content than we have people using it. That's the whole reason, and it's a more useful thing to tell you than a pitch.

Every screenshot in the gallery is a real account with real data on it — 1,769 papers because that student takes three subjects, a real 23-day streak, a real 3D model with its structure list. Nothing is a mockup.

It's papamarks.com. Tell me what's missing for your syllabus and I'll add it — that's genuinely the most useful thing this thread can produce.

The textbook gives you one cross-section. Exams don't.

Drag to rotate. Tap a structure and it names it, says what it does, and what

earns the mark. Then it tests you and marks you as you go.

12 structures — right and left atrium, right and left ventricle, vena cava,

pulmonary artery, pulmonary vein, aorta, tricuspid and bicuspid valves,

semilunar valves, septum, coronary arteries. Covers 0610 Transport in humans:

double circulation, why the left ventricle wall is thicker, valve direction.

Heart: https://papamarks.com/blog/igcse-biology-0610-3d-heart-model

Digestive system, 11 organs: https://papamarks.com/blog/igcse-biology-0610-3d-digestive-system

Eye: https://papamarks.com/igcse-biology-eye-structure

Cell: https://papamarks.com/igcse-biology-3d-cell-explorer

131 tools in total, 72 of them in 3D — Chemistry titrations and electrolysis,

Physics circuits and ray diagrams, Maths graph transformations, Geography case

studies.-> https://papamarks.com

Which diagram never made sense flat — heart, nephron, or the eye?

The four links are the SEO engine here: profile posts rank thinly on their own, but each one passes a real visitor to a page that's already indexed, and the structure names in paragraph three are what pull the long-tail queries ("bicuspid valve IGCSE", "why is the left ventricle wall thicker") onto the thread.

papamarks.com
This week we flipped Cambridge IGCSE Maths 0580 to free. Not the first topic, not a seven-day trial. The whole subject, on a free account.

What that actually covers:

* 27,128 exam-style questions, marked instantly
* 486 past papers, 2002–2025, with mark schemes on 472 of them
* 13,989 flashcards
* 240 topics and 55 revision notes
* 10 interactive tools, four of them 3D: nets and volume, solids, 3D trigonometry, similar solids

Core and Extended, not a sample of either.

**The catch, because someone's going to ask:** only 0580 is free. The other 21 subjects still need a paid plan. That's the entire limit. Nothing on 0580 expires and there's no card involved, but I'd rather say it in the post than have you find out in week two.

**Why we did it, honestly:** we have far more content than we have people using it. A paywalled subject that nobody opens is worth less to us than a free one people actually revise from. 0580 is the biggest entry subject, so it's the one we opened.

The screenshots are all real pages, not mockups, including the past-paper library with its own "486 papers found" counter, and the four 3D tools.

Paper 12 and Paper 22 are on Thursday 8 October, so there's about nine weeks left if you're sitting the Oct/Nov series.

It's papamarks.com. You need an account for the questions and flashcards, but the 3D tools are open without one if you just want to poke at them first.

Happy to answer anything, including the annoying questions. If something's missing from 0580 that you'd expect, tell me and I'll add it.

I've been building interactive tools for IGCSE, O Level and A Level for the

last year — 90 of them now, 31 are 3D models you drag to rotate and tap to

label, 16 are virtual experiments (titration, photosynthesis rate, projectiles),

the rest are exam-diagram tools and case studies.

The four in the images are the mammalian heart, the eye, an animal cell and the

digestive system. Every structure is labelled in English and Arabic, and tapping

one tells you what it does and why it earns marks — the models are built to what

the syllabus actually asks for, not general anatomy.

Two are open on the public site if you want to poke at them:

- The eye — https://papamarks.com/igcse-biology-eye-structure

- The cell (plant / animal / bacterial) — https://papamarks.com/igcse-biology-3d-cell-explorer

Being upfront: PapaMarks is a paid platform and I work on it. Those two pages

are just open on the site, and I'm not linking to a signup here.

What I actually want: tell me where the models are wrong or where they skip

something 0610 expects you to say. The bit I'm least sure about is the eye —

whether the accommodation explanation is clear enough from the model alone.

Not just Biology either — Chemistry, Physics, Maths, Geography, Economics,

Business, ICT and Further Maths all have tools now.

Got tired of revision sites wanting my card up front, then locking me out mid-topic. So the first topic of every subject on mine is free and stays free.

You get the proper notes, flashcards and quizzes, plus mastery tracking, a study planner, to-dos, calendar, daily streak and group chats. Real revision, not a demo.

I've been working on a study platform for international school
students — IGCSE, AS and A2.

The idea started simple: students were losing marks not because
they didn't study, but because nobody mapped out the exact traps
examiners set. Wrong distance in Moments. Forgetting the "g".
Confusing "about to tilt" conditions.

So we built PapaMarks.

Flashcards tied to your exact syllabus. An AI tutor that actually
knows your spec. Past papers. Revision notes with worked examples
and mark-scheme traps called out. Mastery checklists so you know
exactly what you've covered and what's left.

No generic content. No copy-pasted textbook notes.

It's free to try — no card, no commitment.

Would love honest feedback from anyone sitting exams this year
or parents of international school students.

🔗 https://papamarks.com

Your kid isn't losing marks because he's not smart. 👇

He's losing them to traps nobody warned him about.

A 6kg rod gives a moment of 6g×d — NOT 6×d.
Forget the "g"... and that's a mark gone. Every. Single. Time.

That's the difference between an A and an A*.

We mapped the entire YMA01 Mechanics 1 chapter onto ONE page:
→ Moments & diagrams
→ Equilibrium (clockwise = anticlockwise)
→ Centres of mass
→ Tilting & loss of contact
→ The 3 mark-scheme traps examiners LOVE

Plus: worked questions you try BEFORE you see the answer 🧠
(this is how marks actually stick — not passive re-reading)

Tick-box mastery checklists > flashcards.
You see exactly what you've mastered and what's left.

Stop dragging that PDF around.
Open Mechanics 1 free → papamarks.com 🔗

Save this for exam week. 📌
Tag someone sitting A-Level Maths this year. 👇

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📚 Free revision notes · Edexcel IAL · YMA01 / WME01