Weekly Programme · Secondary 4 · O-Level Prep

Secondary 4 Math, the O-Level year, done calmly

By Sec 4 the content is mostly learned. The grade now turns on something else: choosing the right method under time, writing working a marker can follow, and not losing the method marks your child has already earned. That is what the exam year is really about.

Our Sec 4 maths tuition is built around exam simulation and a debrief loop: timed papers, marked the way the O-Level marks them, then a post-mortem by error type and targeted drills. We turn method marks and mark-proof working into grades. The quality comes from the system, not from which tutor your child is given.

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E Math and A Math Small classes Onsite or Zoom

A Genius Plus Academy Secondary 4 student working through a timed O-Level practice paper

skill families

error types

step lessons

A Genius Plus Academy tutor reviewing a Secondary 4 student's marks-visible working before the O-Level

The idea behind the programme

At most centres, the tutor is the quality. Here, the system is.

At Genius+, the system delivers the quality, and the tutor is trained to deliver the system.

In the exam year that matters more than ever. It is a curriculum we write and publish ourselves, 60+ textbooks and 40+ workbooks, a fixed six-step lesson design every class follows, a diagnostic that finds where the marks are actually leaking, and a marking protocol built from real student scripts and the way the O-Level itself awards marks. Your child gets the same standard whichever class they are in, and whoever is teaching that week.

Diagnose

Find where the marks leak, not just the wrong answers.

Teach

Same six-step lesson, same skill families, every class.

Mark

Tag every error by type, then close the gap with drills.

The engine of the O-Level year

Exam simulation, then the debrief loop.

Doing more papers is not the same as improving. The improvement happens in the debrief: the timed attempt, then a post-mortem by error category, then targeted drills, then a re-test. Each cycle closes a real gap. By the O-Level, the exam room feels like just another practice run.

Timed attempt

A paper sat under real conditions, so time, stamina and pressure show up honestly.

Debrief by error type

Every lost mark is tagged against the Mistake Taxonomy, so the pattern becomes visible.

Targeted drills

Practice aimed at the specific gap, not more of what your child can already do.

Re-test

The same gap, tested again under time, to confirm it has actually closed.

How we organise the curriculum

We revise five skill families, not topics in isolation.

The O-Level tests across chapters in one paper, so Sec 4 revision has to do the same. We run each family as a connected whole, which is why our students cope better with mixed-topic questions than students whose revision goes chapter by chapter.

Algebra Toolkit

The core engine: indices, surds, expansion, factorising, algebraic fractions, changing the subject, simultaneous equations, inequalities and quadratics. Shaky algebra is where most Sec 4 marks quietly leak.

Graphs & Functions

Interpretation over drawing: gradients, intercepts, equations of lines, quadratic graphs, tangents, and in A Math the functions, modulus and the discriminant.

Geometry & Measurement

Structure and reasoning: angle reasoning, congruence and similarity, circles, mensuration, coordinate geometry and vectors.

Trigonometry

Routine beats panic: the sine and cosine rules, the area formula, and in A Math the trigonometric functions, identities and the R-formula, with clean calculator habits.

Statistics & Probability

Reading discipline: data interpretation, averages and spread, cumulative frequency, box plots, sample-space probability and tree diagrams.

"The O-Level mixes topics in one question. We revise skill families, not chapters, so a mixed question stops feeling like a trap."

See the thinking, not just the answer

A hard one, shown with the working a marker can follow.

In Sec 4 the grade often turns on the working, not the answer. The reflex we train is to read the structure first, then write each step so the method marks are visible even if the final number slips. Here is one A Math example, checked and signed off by Mrs Toh.

A Math · Trigonometry

The R-formula turns two waves into one.

A child who recognises that a sin x + b cos x can be written as a single wave R sin(x + α) unlocks maximum, minimum and equation-solving in one move.

Express 3 sin x + 4 cos x as R sin(x + α):

R = √(3² + 4²) = √25 = 5

tan α = 4 / 3, so α = 53.13°

= 5 sin(x + 53.13°)

Maximum value = 5, at x = 36.87°.

The teaching point: a sine never exceeds 1, so the maximum is simply R. Spotting the structure does the work, not the calculator. And because each line stands on its own, the method marks survive even if the final value is mis-keyed.

Why this is a Sec 4 habit, not a Sec 4 trick.

In the O-Level, a question like this carries marks at several steps: recognising the form, finding R, finding the angle, and stating the maximum. A student who writes only the final answer risks all of them on one keystroke. A student who lays out the working keeps the method marks regardless.

Each line earns its own mark, in order.
The form is named before the numbers go in.
The final answer is stated in the form the question asked for.

This is what we mean by mark-proof working: the marks are protected by the layout, not just the answer.

The lesson architecture

Every class follows the same six steps.

This is what "consistent lesson architecture" means in practice. Support fades step by step, so by the end of the lesson your child is working the way they will need to in the O-Level itself, alone and under realistic conditions.

1 · Recall warm-up

Retrieval practice that activates prior knowledge and prevents it decaying.

2 · Concept

Why it works, not just which steps to follow.

3 · Worked examples

Explicit "why this method" decision points, so students learn to choose, not copy.

4 · Guided practice

Error prevention while the habit is still forming. Support fades as competence builds.

5 · Independent attempt

The student works alone under realistic conditions, building exam independence.

6 · Exit check

A short closing test that reveals whether it truly clicked, not just looked like it did.

The mark-proof system

Most "careless mistakes" are not careless. They have a pattern.

Built from the top issues across real student scripts, our Mistake Taxonomy tags every wrong question by error type. In the exam year this is the most direct route to a higher grade: most students are closer than they think, and are simply leaking the same marks the same way each paper. Name it, then drill it out.

1 · Sign & brackets

Lost minus signs, mishandled brackets.

2 · Substitution

Wrong value put into the right formula.

3 · Rounding

Premature or wrong rounding at the end.

4 · Units

Right number, wrong or missing unit.

5 · Diagram reading

Misreading a figure, scale or graph.

6 · Method selection

The first method recognised, not the right one.

7 · Reasoning & working

Right idea, working the examiner cannot follow.

Seven error types. Name it, then close it.

Mark-visible working

One line per step, justification where it is required, key values boxed, the final answer in the right form. In the O-Level this is what keeps the method marks even when the final number goes wrong.

Exam-simulation & debrief loop

Timed attempt, post-mortem by error category, targeted drills, then re-test. Each cycle closes a real gap. The loop is what turns Sec 4 practice into actual improvement.

Independence building

Scaffolding is faded on purpose: silent start, delayed feedback, no mid-solution confirmation. Students learn to convince the paper, not the tutor, which is exactly what the exam room asks of them.

Who it suits

It works at both ends of the class.

Our Sec 4 maths tuition is a good fit if your child:

knows the content but keeps collapsing under exam time;
gets the right answer but loses method marks because the working is unclear;
reaches for the first method they recognise, not the right one;
is stuck a grade or two below where their prelim marks suggest they should be;
needs the O-Level to feel routine rather than terrifying.

Already strong

Many join in Sec 4 because they are inconsistent: losing easy marks and panicking on unfamiliar formats. We sharpen reliability for the A.

Stuck in the middle

A clear structure so a hard-looking question stops feeling random, and method marks stop slipping away in the exam.

Far behind

We have worked with students who started from E8 or F9 in Sec 4. Starting weak is not the problem. Staying weak without a system is.

We start with a diagnostic

Most tuition starts with "let's do more papers." We start with "where are the marks actually leaking?"

In the exam year, more volume only helps if it targets the real gap. So your trial doubles as a diagnostic. The tutor watches your child across five dimensions, reads a recent script the way the O-Level marks it, and writes up what they see, and you get that feedback before you decide anything.

Concept gap · does not yet understand the underlying principle.
Technique gap · knows the concept but cannot execute it reliably.
Method-choice gap · reaches for the wrong tool for the question type.
Exam-readiness gap · time, stamina and how they handle pressure.
Communication gap · working that loses marks even when the answer is right.

A Secondary 4 student working through a timed O-Level practice paper during a diagnostic

What's included

Far more than the two hours in class.

Small classes so every student is seen, with caps kept low at each branch.
Our own materials, written and published in-house: 60+ textbooks and 40+ workbooks, with term textbooks refreshed every 10 to 12 weeks.
Every lesson recorded, onsite and Zoom, on the portal, for revision, exam prep or catch-up.
Weekly homework with detailed marking that explains why a step was wrong and how to fix it, not just a circled answer.
Unlimited 1-to-1 consults with your child's tutor, onsite or Zoom, at no extra charge.
WhatsApp support and clear progress tracking each term.

The unlimited free consults are ad-hoc help sessions with your child's existing tutor. They are different from our paid Private 1-to-1 programme, which is structured one-to-one tuition with a dedicated tutor.

A small Genius Plus Academy Secondary 4 Math class in session

The people behind the system

The teachers who write the curriculum.

Mrs Eileen Toh

Founder & Curriculum Architect

Former MOE teacher, M.Ed (NIE), with years marking national exams. She authored the curriculum and the mark-proof system the whole Secondary programme is built on.

Ms JS Lee

Principal Tutor

B.Sc. (Hons), trained under Mrs Toh to deliver the system. Known for calm, step-by-step explanations that make A Math feel doable.

Schedule, format & fees

Weekly classes, onsite or on Zoom.

Class	Day & time	Branch	Availability
S4 Math	Tuesday, 7pm to 9pm	Bukit Timah (Coronation Plaza)	Places available
S4 Math	Friday, 7pm to 9pm	Punggol (Edgedale Plains)	Places available
S4 Math	Saturday, 12pm to 2pm	Pasir Ris	Places available
S4 Math	Sunday, 3pm to 5pm	Bukit Timah (Coronation Plaza)	Places available
S4 A Math	Sunday, 5:30pm to 7:30pm	Bukit Timah (Coronation Plaza)	Places available

Live class availability, refreshed from our class roster (last updated 2026-06-22). Current fees are confirmed at your free diagnostic consult, and financial assistance is available case by case for families with genuine need.

Format

One 2-hour lesson a week per subject, term by term, ongoing all year. Switch between onsite and Zoom whenever you need to.

Small classes

Caps are kept low at every branch so each student is seen. We confirm the class size for E Math or A Math when we place your child.

Where we run Secondary 4 Math

Bukit Timah (Coronation Plaza) · Punggol · Pasir Ris · Upper Thomson · or live on Zoom. The same teaching and materials at every venue.

Taking both E Math and A Math?

Many Sec 4 students do. These are two separate classes, each at the standard per-class fee. We can plan the timetable with you at the consult.

Fees

Quoted at your diagnostic consult.

Secondary Math uses the same fee structure as our upper-Primary classes. We will give you the exact figure for your child's subject and venue at the consult, with no obligation.

Weekly 2-hour lessons, onsite or Zoom
Recorded lessons and marked weekly homework
Unlimited 1-to-1 consults, no extra charge
Our own textbooks and workbooks

Book your diagnostic consult

Financial assistance is available for families on MOE FAS or facing genuine difficulty. Mrs Eileen Toh reviews these case by case, in confidence.

How joining works

Four calm steps, no pressure.

You can join the current term whenever you are ready, even mid-year. Here is the path most Sec 4 families take.

Book a diagnostic

Tell us your child's school and whether they take E Math, A Math or both. We find the class that fits.

Trial & assess

Your child sits in a real class. The tutor observes across the five diagnostic dimensions.

Get the feedback

Within about a week you receive a written read on where the marks are leaking, before you commit.

Join the term

If it is a good fit, register and start. Recordings cover anything missed along the way.

Book a diagnostic & trial Register directly →

Questions Sec 4 parents ask

My child knows the work but keeps underperforming in exams. What is different here?

By Sec 4 that is usually an exam-execution problem, not a knowledge problem. We run an exam-simulation and debrief loop: a timed paper, a post-mortem that tags every lost mark by error type, targeted drills, then a re-test. That fixes the pattern causing the underperformance, rather than re-teaching content your child already knows.

What are "method marks" and why do you talk about them so much?

In the O-Level, marks are awarded along the working, not only for the final answer. A student who shows each step clearly keeps those method marks even if the last number is wrong. We train mark-visible working so the layout itself protects the marks your child has earned.

Is it too late to join in Sec 4?

No. The exam year is when the debrief loop is most useful, because most students are leaking the same marks the same way and are closer to a higher grade than they think. We start with a diagnostic, place your child correctly, and any earlier lessons are on the portal as recordings to catch up on.

What does "system over tutor" actually mean?

At most centres the quality depends on which tutor you get. Here it comes from the system: a curriculum we write ourselves, a fixed six-step lesson every class follows, a diagnostic that finds where the marks leak, and a marking protocol that tags every error by type. The tutor is trained to deliver that system, so your child gets the same standard whichever class they are in.

How much does it cost, and does taking both subjects cost double?

E Math and A Math are two separate classes, each at the standard per-class fee, so there are two lesson slots if your child takes both. Secondary Math uses the same fee structure as our upper-Primary classes, and we quote the exact figure at the diagnostic consult, with no obligation. Financial assistance is available for families on MOE FAS or facing genuine difficulty, reviewed in confidence by Mrs Eileen Toh.

What is included beyond the weekly lesson?

Small classes, our own textbooks and workbooks, every lesson recorded, weekly homework with detailed marking, and unlimited 1-to-1 consults with your child's tutor at no extra charge, onsite or Zoom. These free consults are ad-hoc help with the existing tutor, and are different from our paid Private 1-to-1 programme.

What results have your O-Level students seen?

We would rather show you a diagnostic read on your own child than wave a number around. On our results page you can see named family journeys, several starting from much lower grades, and at a free consult we will show you exactly where your child's marks are leaking and what it would take to close the gap. Individual results vary with each student's starting point and effort.

Secondary 4 Math, the O-Level year, done calmly

At most centres, the tutor is the quality. Here, the system is.