Physics, class 9

This is the science cell where the three boards genuinely diverge. Units 1–4 are identical everywhere — physical quantities, kinematics, dynamics, turning effect of forces — so the mechanics core is national. After that they part. Punjab's nine chapters uniquely add Magnetism, which neither other board teaches at grade 9, and a "Nature of Science" chapter whose outcomes require pupils to "Explain, with examples in Physics, falsifiability as the idea that a theory is scientific only if it makes assertions that can be disproven" (p.181) and where nanotechnology and artificial intelligence enter (pp.192–193); Punjab uniquely drops Gravitation, a full unit in both others. Sindh's nine units alone give energy sources their own unit, teaching renewable against non-renewable and why "a system cannot have an efficiency of 100%" (p.180); its own contents page prints only eight rows and omits that unit. KP has eight units, folding elasticity into Properties of Matter. Punjab is SNC-era, Sindh and KP are 2006-curriculum, so this is Punjab's current book against what the others are printing — though here the vintage gap does not explain the religious split. A1 divides 3 (KP) against 1 (Punjab and Sindh), and it is editorial. KP's Chapter 1 opens with a full page of Quranic verses before any physics — "Do they not think? Do they not contemplate?" — followed by a boxed "ISLAMIC WORLD CONTRIBUTION TO PHYSICS" profiling Yaqub Kindi and Al-Beruni and then famous Pakistani physicists (pp.5–6). Punjab opens on measurement, its one named Pakistani scientist Abdus Salam in a secular frame (p.56); Sindh has not one religious token in 223 pages and no bismillah, the most secular book examined. KP is also the least bad on gender, A7 4 rather than 5, because its worked problems routinely use female actors. The only physics book in Pakistan that opens with scripture and the only one that puts women in its worked examples are the same book.