Why Dabour Hub?
Every course here is written by Mr Khaled Dabour and follows the official specification point by point — so nothing on the exam is a surprise.
What you get
Official specification order
Lessons follow the syllabus point by point, in the order the board publishes it, so revision maps directly onto the exam.
Original question banks
Questions taken from real past papers, sorted by unit, as images of the original paper rather than retyped text.
Short bullet revision notes
No paragraphs to wade through. Every objective is a bullet you can learn and tick off.
Worksheets you can print
Thirty questions per unit, split into Foundation, Standard and Challenge, watermarked and ready to hand out.
Six exam boards
Cambridge, Edexcel, IB Diploma, Checkpoint, EST II and AP — Biology, Chemistry and Physics.
Works on your phone
The whole site is built to open quickly on a phone, not just a laptop.
Try a few questions
A sample of the multiple-choice style used across the courses.
1. Which structure controls what enters and leaves an animal cell?
- Cell wall
- Cell membrane
- Nucleus
- Vacuole
2. During photosynthesis, which gas is taken in by the leaf?
- Oxygen
- Nitrogen
- Carbon dioxide
- Hydrogen
3. What is the charge on a proton?
- Negative
- Positive
- No charge
- It varies with the element
4. Which process moves water across a partially permeable membrane?
- Active transport
- Diffusion of solutes
- Osmosis
- Respiration
5. In an ionic bond, electrons are
- shared equally
- shared unequally
- transferred from metal to non-metal
- delocalised across a lattice
Answers are given inside the courses, alongside the full worked explanation.
Browse the courses
WhatsApp Mr Dabour
Mr Khaled Dabour · HIA · dabour-hub.com · 966567158380
Arabic guides for Qudurat and Tahsili
Same network, Arabic: Qudurat & Tahsili study plan, Most-mentioned Qudurat mistakes, Tahsili timed practice, and Dabour News (science news in Arabic).