Overview
Scoring highly in IB Physics SL is not about memorising more — it is about aligning your answers with what examiners reward in the markbands. Strategic use of [IB Physics past papers](/ib/past-papers/physics-sl) under timed conditions, honest self-marking, and targeted feedback closes the gap between a 5 and a 7.
Understanding the IB Physics SL assessment
Paper 1 is multiple choice. Paper 2 contains structured and extended questions across mechanics, thermal, waves, electricity, and atomic physics. Paper 3 includes data-based practical-style questions and your option topic. Browse the full subject overview at [IB Physics SL](/ib/subjects/physics-sl).
Markbands and what examiners reward
For IB Physics SL, extended answers are judged on physics reasoning: clear diagrams, stated assumptions, correct units, and linking maths to physical meaning. A correct number with no working rarely earns full credit.
A past paper workflow that actually works
For IB Physics SL, cycle: timed paper → mark → topic drill. Keep a formula sheet you build yourself (not just the booklet). Practise explaining *why* an equation applies, not only *how* to substitute.
Paper-specific tips
For IB Physics SL, draw diagrams for forces and circuits. Quote values with SI units. For uncertainties, practise combining absolute and percentage errors — a recurring Paper 3 theme.
Common pitfalls
Sign errors in vector problems; confusing scalars and vectors; skipping unit conversion; describing graphs without referencing gradient or area meaning.
Using MarkScheme for targeted feedback
Self-marking against band descriptors is essential, but extended responses benefit from a second opinion. After a past paper or IA section, [get criterion-based feedback](/mark?subject=ib-physics-sl) aligned with IB assessment objectives — the same habits that lift exam scripts also sharpen coursework drafts.
Our free Physics SL course links every syllabus topic to lessons, flashcards, and practice tasks. Also see the Physics HL course if you sit the other level. Revise syllabus-by-syllabus with topic practice — each point links to a lesson and criterion marking task.
Frequently asked questions
This section covers Frequently asked questions — what IB examiners reward most often in past papers and coursework.
Calculator for Paper 1?
Paper 1 allows a calculator in current syllabuses — confirm with your teacher, but practise MCQs with the calculator you will use in the exam.
How much working is enough?
If the question says "show that", every algebraic step must be visible. Examiners cannot infer missing logic.
Best option for SL?
Choose the option your school teaches well and for which you have the most past Paper 3 questions banked.