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The Intuitional Blog

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Exam techniques, study tips and subject guides from Singapore tutors who've been there.

O-Level Pure Chemistry: Organic Chemistry — Alkanes, Alkenes and Alcohols: Reactions and Identification★ Latest
Chemistry•7 min read

O-Level Pure Chemistry: Organic Chemistry — Alkanes, Alkenes and Alcohols: Reactions and Identification

Organic chemistry forms a dedicated section of the O-Level Pure Chemistry paper and typically contributes 10–15% of marks across both papers, yet many students enter the exam without a unified picture of how alkanes, alkenes and alcohols connect. This guide maps the key reactions, identification tests and structural patterns for each homologous series, and highlights the exam traps that cost the most marks. A systematic reaction-map approach turns this topic from a memorisation exercise into a pattern-recognition one.

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O-Level Pure Physics: Kinematics — Distance-Time & Velocity-Time Graphs and Equations of MotionPhysics
•7 min read

O-Level Pure Physics: Kinematics — Distance-Time & Velocity-Time Graphs and Equations of Motion

Kinematics questions appear in almost every O-Level Pure Physics paper, but many students lose marks by misreading graph gradients or picking the wrong equation of motion. This guide breaks down distance-time graphs, velocity-time graphs, and the four key equations into a systematic, step-by-step method you can apply under exam conditions. Work through the worked examples and exam-trap checklist to build the confidence to score full marks on any kinematics question.

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A-Level H2 Mathematics: Integration Techniques — Reading Differentiation in ReverseMath
•9 min read

A-Level H2 Mathematics: Integration Techniques — Reading Differentiation in Reverse

Integration is one of the heaviest-weighted topics in A-Level H2 Mathematics, yet many students lose marks not because the question is hard but because they pick the wrong method or forget the basics. This guide walks through every technique your child needs — reverse chain rule, substitution, by parts, partial fractions, trigonometric integrals and the area and volume applications — using clear worked examples and plain language. It also flags exactly what is given on the MF26 formula list and what must be memorised.

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O-Level Pure Physics: Electricity & D.C. Circuits — Stop Losing Easy Marks on V=IR, Series & Parallel, and Potential DividersPhysics
•10 min read

O-Level Pure Physics: Electricity & D.C. Circuits — Stop Losing Easy Marks on V=IR, Series & Parallel, and Potential Dividers

Electricity and D.C. circuits is one of the most predictable scoring topics in O-Level Pure Physics, yet it quietly drains marks every year through avoidable slips with units, series-versus-parallel reasoning, and the e.m.f.-versus-p.d. distinction. This guide walks your child through the core ideas, three fully worked exam-style questions, and the exact traps examiners love to set. Read it as a revision companion before the next test or prelim.

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