SECONDARY 4 G3 MATHEMATICS

Excel in O-Level E-Math and A-Math with strategic rigor.

Secondary 4 G3 stream focuses on integrating algebra, trigonometry, and higher-order techniques for exam performance. Secondary 4 is the exam year where revision strategy, time management, and consistent execution under pressure determine final results. Current Sec 4 students sit the O-Level or N-Level examinations under the Express, Normal Academic (NA), and Normal Technical (NT) streams.
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Syllabus

What we cover

Chapters8
Sub-topics41

DeepThink aligns to Upper Secondary outcomes and exam requirements while reinforcing essential prerequisites. Preparation emphasises precise working, topic integration, and exam execution across E-Math and A-Math demands.

Chapter 1Sets

  • Sets and set notations
  • Venn diagrams, universal sets, complements of sets and subsets
  • Intersection of two sets
  • Union of two sets
  • Solving problems involving sets

Chapter 2Probability of Combined Events

  • Probability of a single event
  • Probability of combined events
  • Addition Law of Probability and mutually exclusive events
  • Multiplication Law of Probability and independent events

Chapter 3Statistical Data Analysis

  • Cumulative frequency table and curve
  • Median, quartiles, percentiles, range and interquartile range
  • Box-and-whisker plots
  • Standard deviation

Chapter 4Matrices

  • Introduction to matrices
  • Addition and subtraction of matrices
  • Matrix multiplication
  • Applications of matrices in real-world contexts

Chapter 5Vectors

  • Vectors in two dimensions
  • Addition of vectors
  • Vector subtraction
  • Scalar multiples of a vector
  • Expression of a vector in terms of two other vectors
  • Position vectors
  • Applications of vectors

Chapter 6Revision – Numbers and Algebra

  • Numbers and percentages
  • Proportion, ratio, rate and speed
  • Algebraic manipulation and formulae
  • Equations and inequalities
  • Functions and graphs
  • Graphs in practical situations
  • Sets
  • Matrices

Chapter 7Revision – Geometry and Measurement

  • Angles, triangles and polygons
  • Congruence and similarity
  • Pythagoras' Theorem and trigonometry
  • Mensuration
  • Coordinate geometry
  • Vectors
  • Properties of circles

Chapter 8Revision – Probability and Statistics

  • Probability
  • Statistics
Note

Upper Secondary G3 success comes from rigorous concept mastery plus disciplined exam execution.

Common challenges at this level

Secondary 4 students in the G3 stream often face:

Balancing revision breadth with exam-year pressure

Students must revise a full syllabus while managing multiple subjects, mock exams, and increasing anxiety. Without a clear revision plan, important topics are often under-practised.

Handling complex mixed-topic papers

Students may know individual topics but still struggle when papers integrate many concepts under time pressure.

Handling mixed-topic exam questions

Exam questions combine multiple concepts, so students need both technical fluency and strategic planning.

Balancing Math with full exam-year workload

Revision competes with many subjects; without clear prioritisation, important Math topics are often under-practised.

How DeepThink helps Sec 4 G3 students

DeepThink supports Secondary 4 students in the G3 stream through targeted diagnostics, structured teaching, and strategic practice:

Diagnose and close gaps quickly

Our platform identifies chapter-level weaknesses early so students focus effort where it matters most.

Structured revision for exam-year performance

We prioritise high-impact topics, build exam stamina through timed practice, and track revision coverage so nothing critical is left unaddressed before the exam.

Rigorous practice loops and error analysis

DeepThink uses targeted diagnostics, correction workflows, and strategic teaching to lift consistency in exam conditions.

Track progress with clear next steps

Students and parents see what is secure, what needs reinforcement, and which topics should be prioritised next.

With consistent support, students can approach O-Level papers with precision, confidence, and exam-ready stamina.

Program facts

What families should know about Secondary 4 G3 support

The details parents usually want before deciding whether to book a trial.

Lesson format

Weekly 1.5-hour live online class

Targeted online practice with instant marking supports work between lessons.

Class size

Maximum 4 students

Students are grouped by learning pace, not just by level — if no existing session matches your child’s pace, we open a new one.

Syllabus focus

MOE Secondary Mathematics

Full curriculum and chapter list shown in the syllabus section above.

Pricing

$50 per live class

Same fee across levels and streams.

Trial

Free trial class available

Parents can see the teaching pace, structure, and student experience before committing.

Best fit

Secondary 4 G3 students who need weekly support matched to their exact stream and exam syllabus.

Decision support

When Secondary 4 G3 support is the right fit

These are the situations where extra support tends to make the biggest difference.

Your child needs to improve both E-Math and A-Math grades for JC admission

JC cut-off points consider aggregate scores. Improving weaker subjects has a larger impact on the aggregate than marginal gains in stronger ones. We help students prioritise strategically.

A-Math topics like calculus or trigonometry are still not secure

If key A-Math topics remain shaky in Sec 4, targeted intervention is urgent. These topics carry significant marks and cannot be avoided in the exam — attempting them unprepared costs more marks than skipping them.

Your child can do questions in practice but underperforms in exams

This performance gap signals a need for exam-condition training — timed papers, question triage, and working discipline. Regular exam simulation builds the stamina and strategy to perform reliably.

If any of these patterns sound familiar, this is likely the right level of support for your child — a trial class is a good next step.

Frequently asked questions

Clear answers for parents

What exams does a Sec 4 G3 / Express student sit?

G3 (Express) students sit the O-Level examinations — typically both Elementary Mathematics (E-Math) and Additional Mathematics (A-Math). Strong performance in both opens the widest range of JC and polytechnic options.

How should my Express / G3 child balance E-Math and A-Math revision?

Most students find E-Math more manageable, so they should allocate proportionally more revision time to A-Math. However, E-Math should not be neglected — careless errors on the "easier" paper can cost unexpected marks.

When should Sec 4 G3 / Express students start doing full exam papers?

Ideally by the start of Term 3, once the full syllabus is covered. Before that, focus on topic mastery and timed topical practice. Full papers are most useful when the student can attempt every question.

What are the most common reasons G3 / Express students underperform in O-Levels?

Careless errors under time pressure, incomplete revision of the full syllabus (skipping weaker topics), and poor exam technique — such as not showing sufficient working for method marks.

My child is scoring well in E-Math but poorly in A-Math — what should we prioritise?

A-Math improvement. A weak A-Math grade limits JC stream options and suggests gaps in algebraic reasoning that will matter for H2 Math. Target the weakest A-Math topics first — usually calculus or trigonometric proofs.

How many students are in each class?

Four, at most. Students are grouped by learning pace, not just by year level, so each lesson moves at the speed of the students actually in it. When no session matches a child’s pace, we open a new one. In a class that size, every child answers questions, gets their working checked, and gets help the moment they need it.

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