Warm-up · question 1 of 3
Sir Saud Barlas is a FAST-trained telecom engineer who has spent 12+ years turning the hardest chapters into clear, exam-ready steps. Learn the idea, then the pattern, then the marks.
After his own O and A Levels, Sir Saud went on to study telecommunication engineering at FAST. He has been teaching mathematics ever since, more than twelve years, and students know him for one thing above all: complicated ideas stop feeling complicated in his class.
His lessons are built around how the exam actually asks questions. You get the concept, the shortcut that saves time, and the exact working an examiner wants to see.
Years in the classroom
Cambridge syllabuses taught
YouTube followers
Level coverage, start to finish
Every course runs the full Cambridge syllabus, with past-paper practice built in from week one.
The full syllabus D, from number and algebra to geometry, trigonometry, vectors and statistics.
Functions, quadratics, logarithms, trigonometric identities, calculus and more, taught so the jump from O Level feels natural.
Pure Mathematics 1, 2 and 3, Mechanics, and Probability & Statistics 1 and 2, planned around your chosen route.
Each topic starts with the picture or the reason behind it. Once you know why a formula works, you stop forgetting it.
Cambridge asks the same ideas in a handful of recurring shapes. You learn to recognise each shape and the first line that unlocks it.
Practice comes straight from past papers, topic by topic first, then full timed papers as the exam gets close.
Mark schemes and examiner reports show where marks are won and lost. You learn to write the working that collects every method mark.
Pick a syllabus, year and session. Each question paper sits next to its mark scheme, with the examiner report and grade thresholds one tap away.
Files open from PapaCambridge's public archive of Cambridge (CAIE) papers. Not every variant is published for every session. © UCLES, Cambridge University Press & Assessment.
Plot any function, solve quadratics and simultaneous equations step by step, crack triangles, or plan the marks you need. Free, no sign-up.
Type a function of x. Roots and intersections are marked for you. Drag to pan, scroll or use the buttons to zoom.
Solve ax² + bx + c = 0 with the discriminant, roots, vertex and completed-square form.
Two linear equations in x and y, solved by elimination and drawn as two lines.
Uses the sine and cosine rules. Angles in degrees; side a is opposite angle A.
Enter your marks and set a target percentage. Check the session's grade thresholds in the Paper Vault for the real boundaries.
A complete scientific workspace: basic and scientific calculation, a step-by-step solver, 2D, 3D, polar, vector and Fourier graphs, matrices, statistics, converters and a formula reference.
YKW Calculator by @hashirykw. Everything runs in your browser.
Sir Saud's official channel covers the complete mathematics syllabus, so a missed class or a late-night doubt never has to wait.
Cambridge O Level Mathematics (4024), O Level Additional Mathematics (4037) and AS & A Level Mathematics (9709), covering Pure Mathematics, Mechanics and Probability & Statistics.
Fill in the contact form below or send a WhatsApp message to 0300 8985020 with your level and syllabus. Current batch timings, venues and fees are shared there.
Yes. The Paper Vault links straight to publicly archived Cambridge question papers, mark schemes, examiner reports and grade thresholds. No sign-up needed.
A mark scheme lists the answers and where each mark is given. An examiner report explains how candidates actually performed, which questions caught people out, and the mistakes that cost the most marks. Read both after every paper.
No. They are checking tools for practice. Use them to confirm an answer or see a graph, then make sure you can write the full working yourself, because that is where the method marks are.
Tell Sir Saud who you are and what you're preparing for. The form opens WhatsApp with everything filled in, so your request reaches him directly.
WhatsApp opened with your details filled in. Tap send there to reach Sir Saud. If it didn't open, use the button below.
Message Sir Saud with your level and syllabus. He'll point you to the right batch.
Prefer an app? Download it to your phone or laptop. It opens full screen in one tap, with the Paper Vault, Maths Lab and YKW Calculator right inside. Happy in the browser? Nothing changes, keep using the site.