IB Physics Tutor in Hong Kong

The IB examines uncertainty and error explicitly, in the papers as well as in the IA, and it is consistently the weakest area we see in new students. Absolute versus percentage uncertainty, propagation through a calculation, uncertainty in a gradient, and knowing how many significant figures an answer is entitled to.

None of this is conceptually hard. It is simply rarely taught systematically, which makes it one of the cheapest sources of marks available to a student who does learn it properly.

Where SL-to-HL movers most often struggle:

• Fields — gravitational and electric, and the potential-versus-field-strength distinction students routinely blur.
• Electromagnetic induction, with the sign conventions and the direction rules.
• Quantum and nuclear physics, conceptually unlike anything earlier in the course.
• Wave phenomena at HL depth.

Paper 1 rewards elimination and pace. Paper 2 rewards laid-out working that survives an arithmetic error — a student who shows the substitution still earns method marks when the arithmetic slips, and a student who works in their head does not. Definitions are marked strictly: "the rate of change of velocity" earns the mark, a gesture at the idea does not.

Worth 20%. Physics IAs live or die on whether the investigation produces data with a real, measurable trend and a defensible uncertainty treatment. We help with the research question, the method, the uncertainty analysis and the evaluation — the student runs the experiment and writes the report.