Quick answer
To improve a Cambridge IGCSE Physics grade, the most effective approach is to practise past paper questions with mark scheme review, address specific topic gaps identified through this process, and develop systematic equation-application technique. Note the revised 0625 syllabus from 2023 introduced new topic organisation and a Space Physics section. An equation sheet is provided in current Cambridge IGCSE Physics papers.
Cambridge IGCSE Physics (0625) is one of the most demanding IGCSE subjects — and one of the most rewarding to improve in. Unlike some subjects where improvement requires simply learning more content, IGCSE Physics improvement often hinges on a relatively small number of specific, addressable issues: equation fluency, graph reading, practical question technique, and the ability to explain physical phenomena with the precision the mark scheme requires. Once these are identified and addressed, grades improve significantly and relatively quickly.
This guide sets out the honest picture of what drives improvement in Cambridge IGCSE Physics — based on the examiner reports, the revised 2023 syllabus, and the patterns we see in student performance.
The Cambridge IGCSE Physics syllabus was revised in 2023 — check you are using the right materials
The Cambridge IGCSE Physics syllabus (0625) was revised for examinations from 2023 onwards. Students and parents using older revision materials should be aware that the topic organisation has changed. The revised specification covers eight topic areas:
- Motion, forces and energy
- Thermal physics
- Waves
- Light
- Sound
- Electricity and magnetism
- Nuclear physics
- Space physics
Space physics (Topic 8) is a new addition to the revised specification. It covers the Solar System, the life cycle of stars, and red-shift and the expanding universe. It is relatively short in content but is reliably examined and is frequently under-prepared by students who started their course using pre-2023 materials.
The equation sheet: Cambridge IGCSE Physics provides an equation sheet within the exam paper for the current specification. Students no longer need to memorise all equations — but they do still need to know which equation applies to each situation, how to rearrange equations algebraically, how to substitute values with correct units, and how to present working clearly.
What Cambridge IGCSE Physics examiners consistently identify
Equation application errors. Students who know which equation to use but make errors rearranging it, substituting values with incorrect units, or failing to convert between units (cm to m, g to kg, etc.) consistently lose marks on questions where their conceptual understanding is sound. The four-step method — identify the equation, rearrange, substitute with units, round as instructed — should be practised until it is automatic.
Graph questions not completed correctly. Both Papers 2 and 4 include questions requiring students to calculate gradients, read intercepts, and draw lines of best fit. Students who draw lines of best fit that do not span the data range, calculate gradients using individual data points rather than the drawn line, or read intercepts imprecisely consistently lose marks on these questions. These are learnable, specific skills.
Six-mark questions without a logical structure. Extended response questions require a logically sequenced explanation of a physical process or phenomenon. Students who begin writing without planning the sequence, or who repeat points rather than developing a cause-and-effect chain, rarely score above 4 marks on a 6-mark question. Plan briefly before writing: identify the physical principle, state it clearly, apply it step by step, conclude.
Practical questions — not knowing the purpose of each step. Required practical questions appear across both papers and require students to identify variables, explain the purpose of specific apparatus, suggest sources of error, and propose improvements to method. These are fully examinable without performing any laboratory work and reward students who have specifically prepared the required practicals in depth.
The highest-value topics for Cambridge IGCSE Physics Extended tier
Based on the mark weighting across Papers 2 and 4, the topics that carry the most consistent mark weight are:
Electricity and magnetism (Topic 6). Circuit calculations, the relationship between voltage, current, and resistance, and the motor and generator effect feature heavily. Students who are fluent with Ohm's law, circuit analysis, and the conditions for electromagnetic induction consistently pick up marks here.
Motion, forces and energy (Topic 1). Speed, velocity, acceleration, Newton's laws, and energy calculations are foundational — and foundational marks are some of the most reliably available.
Thermal physics (Topic 2). Specific heat capacity calculations, the particle model of matter, and kinetic theory are well-defined and specific heat capacity calculations in particular carry consistent marks.
Waves (Topics 3, 4, 5). The electromagnetic spectrum, wave speed calculations, reflection and refraction diagrams — well-defined content with predictable question types.
When to get a tutor for IGCSE Physics
Self-directed revision is effective for students who can identify their own gaps and explain to themselves why they are losing marks. For IGCSE Physics, the most common barrier is not content knowledge — it is the ability to express physical understanding with the precision and structure the Cambridge mark scheme requires. A student who understands how a transformer works but cannot write a six-mark explanation that earns full marks has a specific, teachable gap.
One-to-one tutoring identifies these patterns and addresses them directly. Nexus Academy offers IGCSE Physics tutoring from £16 per hour, with a free diagnostic session before any paid sessions. Book a free session →