Weekly Programme · O-Level A Math · Additional Mathematics

O-Level A Math, taught as a system

A Math has a reputation as a subject only for naturally strong students. With the right explanations, that is simply wrong. Most of what makes Additional Math feel hard is missing E Math foundations and unclear teaching, both of which the system is built to fix.

Our A Maths tuition builds Additional Mathematics from familiar E Math foundations, surds and indices, logarithms, trigonometric functions, the binomial theorem and an introduction to calculus, teaching concept first, formula second, with fast feedback on every mistake. The quality comes from the system, not from which tutor your child is given.

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Concept first, formula second Small classes Onsite or Zoom

A small Genius Plus Academy O-Level A Math class working through a problem with the tutor

skill families

step lessons

error types

A Genius Plus Academy tutor guiding an A Math student through marks-visible working

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.

That is not a slogan. It is a curriculum we write and publish ourselves, 60+ textbooks and 40+ workbooks, a fixed six-step lesson design every A Math class follows, a diagnostic that finds the real bottleneck before prescribing more practice, and a marking protocol built from real student scripts. Your child gets the same standard whichever class they are placed in, and whoever is teaching that week.

Diagnose

Find the actual bottleneck, often missing E Math algebra.

Teach

Concept first, formula second, same six steps every class.

Mark

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

Built from E Math foundations

A Math is not a different planet. It is E Math, gone deeper.

Additional Mathematics is a second, more advanced O-Level subject taken alongside E Math. Nearly every new topic sits on something your child already met in E Math. When a student struggles, the cause is almost always a foundation that was never solid, not a lack of natural ability. We rebuild that foundation, then teach the new content concept first, formula second.

Surds, indices & logarithms

Algebra Toolkit, deeper

The same index laws from E Math, extended to surds and to logarithms as their inverse. Polynomials, partial fractions and the remainder and factor theorems all build on E Math algebra.

If E Math indices were shaky, this is where it shows. We fix it first.

Trigonometric functions

Trigonometry, deeper

From E Math right-angle trig to identities, the R-formula, and solving trigonometric equations across a range. Graphs of sine, cosine and tangent with their transformations.

Recognising structure, like a sin x + b cos x, beats memorising every formula.

The binomial theorem & functions

Graphs & Functions, deeper

Expansions and finding particular terms, modulus functions, and the coordinate geometry that extends straight from E Math gradients and lines.

Each topic has a small set of moves. We drill the moves until they are automatic.

An introduction to calculus

The new frontier

Differentiation and integration, with their applications: gradients and tangents, rates of change, maxima and minima, and areas under curves. The one genuinely new idea, taught from the gradient picture students already know.

Calculus rewards understanding the idea first, then the rules follow naturally.

A Math leans on solid E Math. If E Math is shaky too, we start there. See the E Math page →

The myth we want to retire

"A Math is only for naturally strong students." With the right explanations, that is wrong.

Most students who find A Math impossible are not short of ability. They are carrying a few unfixed E Math gaps into a subject that exposes them, and they have been taught formulas without the concept underneath. Change both, and most do far better than they expect.

Concept first, formula second

A student who understands why the R-formula works does not have to memorise four versions of it. Understanding the idea makes the formula obvious, and makes it stick.

Fix the E Math gap underneath

Most A Math struggles trace back to E Math indices, algebraic manipulation or trig basics. The diagnostic finds it, and we close it before piling on more A Math content.

Fast feedback on every mistake

Weekly marking that names the error type, plus unlimited consults, means a misunderstanding does not have weeks to set. Small corrections, made early, compound.

See the thinking, not just the answer

A hard A Math one, shown the way we teach it.

The reflex we train is concept first: read the structure, understand why a move works, then apply the formula. Here is one A Math example, with the working a marker can follow. The maths here is 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.

Why concept first wins

One idea, not four formulas.

A student taught only the formula has to memorise separate versions for R sin(x + α), R sin(x − α), R cos(x + α) and R cos(x − α), and under pressure they pick the wrong one.

A student who understands that they are rewriting two waves as a single shifted wave can derive any version on the spot, and immediately read off the maximum, the minimum and the solutions. That is the difference concept-first teaching makes.

Understand the idea, and the formula stops being something to fear.

The lesson architecture

Every A Math 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 exam, alone and under realistic conditions.

1 · Recall warm-up

Retrieval practice that activates prior knowledge, often the E Math foundation a topic rests on.

2 · Concept

Why it works, not just which steps to follow. This is where A Math is won.

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" in A Math 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. You cannot fix what you have not named, so we name it first, 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. The examiner should never have to guess what your child was thinking.

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 practice into 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. Home life tends to improve as a side effect.

Who it suits

It works at both ends of the class.

A Math here is a good fit if your child:

was told A Math is "only for strong students" and believed it;
has unfixed E Math gaps that A Math keeps exposing;
memorises formulas but cannot tell which one a question wants;
gets the right answer but loses marks because the working is unclear;
studies a lot but does not seem to improve.

Already strong

Many join because they are inconsistent: losing marks on familiar topics and panicking on unfamiliar formats. We sharpen reliability for the A grade.

Stuck in the middle

Concept-first teaching so the formulas stop blurring together, and a hard-looking question stops feeling random.

Struggling and tempted to drop it

Before dropping A Math, let us find the real gap. It is usually an E Math foundation, and it is usually fixable.

We start with a diagnostic

Most tuition starts with "let's do more practice." We start with "what is the actual bottleneck?"

More volume only helps if it targets the real gap. In A Math that gap is very often an E Math foundation, not the A Math topic itself. So your trial doubles as a diagnostic. The tutor watches your child across five dimensions 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.

An O-Level student working through a timed A Math 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.

Genius Plus Academy's own A Math textbooks and workbooks

A curriculum we own

We do not teach from someone else's books. We write our own.

The questions, worked solutions and progression for A Math are part of a curriculum we write and publish ourselves, 60+ textbooks and 40+ workbooks, refined over years of classroom use. That is what lets us teach concept first and connect each A Math topic back to its E Math foundation, rather than chasing whatever chapter the school happens to be on this week.

Video: a GPA parent shares how her daughter went from maths anxiety to scoring A1 in Secondary

From maths anxiety to A1: a parent's story

A parent's story, on camera

From maths anxiety to A1.

A GPA parent shares how her daughter went from maths anxiety in P5 to scoring A1 in Secondary. Across our O-Level cohorts, 82% of Math students scored A1 or A2, including many who started from D7, E8 or F9.

Based on GPA's internal tracking of recent cohorts; individual results vary with each student's starting point and effort.

The people behind the system

The teachers who write the curriculum.

Mrs Eileen Toh

Founder & Curriculum Architect

Former MOE teacher, M.Ed (NIE). She authored the curriculum and the mark-proof system the whole A Math 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
S3 A Math	Tuesday, 7pm to 9pm	Punggol (Edgedale Plains)	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 A Math lesson a week, 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 your level when we place your child.

Where we run O-Level A Math

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

Taking E Math too?

Many Sec 3 and Sec 4 students take both. These are two separate classes, each at the standard per-class fee. We can plan the timetable with you at the consult. See E Math →

Fees

Quoted at your diagnostic consult.

A Math uses the same fee structure as our upper-Primary classes. We will give you the exact figure for your child's level 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. Here is the path most families take.

Book a diagnostic

Tell us your child's level and school. We find the A Math 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 the real bottleneck, 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 →

The wider programme

Taking E Math, or on the IP track?

A Math sits inside our wider Secondary Math programme, Sec 1 to 4. The same system covers E Math, Lower Sec and the IP track, so your child can stay with one method all the way through.

Explore Secondary Math →

Needs individual attention?

Private 1-to-1, for specific A Math topics.

If your child needs focused help on a particular A Math topic, calculus or trig identities, for example, our Private 1-to-1 programme pairs them with a dedicated tutor for one-to-one sessions, built on the same system and materials.

Explore Private 1-to-1 →

Questions parents ask

What does O-Level A Math cover?

A Math, Additional Mathematics, is a second, more advanced O-Level subject taken alongside E Math. It covers surds and indices, logarithms, polynomials and partial fractions, the binomial theorem, coordinate geometry, trigonometric functions and identities including the R-formula, and an introduction to calculus, differentiation and integration with their applications. Most of it builds on E Math foundations.

Is A Math only for naturally strong students?

No, and this is the single most common worry parents bring us. Most students who find A Math impossible are carrying a few unfixed E Math gaps into a subject that exposes them, and they have been taught formulas without the concept underneath. We rebuild the foundation and teach concept first, formula second. With the right explanations, most do far better than they expect.

My child is doing well in E Math but struggling with A Math. Why?

A Math moves faster and more abstractly than E Math, and it stacks new content on E Math foundations like indices, algebraic manipulation and trig basics. A small gap there gets amplified. Our diagnostic finds the actual bottleneck, then we close it before adding more A Math content. It is usually fixable, and far more often a foundation issue than a question of ability.

Do you need to take E Math with you to take A Math?

No. You can join A Math on its own. That said, because A Math leans so heavily on E Math foundations, many Sec 3 and Sec 4 students take both with us, as two separate classes, and find the work in one reinforces the other. You can read more on the E Math page. We will advise honestly at the consult.

How much does it cost?

A Math uses the same fee structure as our upper-Primary classes. We quote the exact figure for your child's level and venue 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.

My child wants individual help on one A Math topic. Is that possible?

Yes. Class students already get unlimited free 1-to-1 consults with their tutor for ad-hoc help. For more structured, focused work on a single topic such as calculus or trig identities, our paid Private 1-to-1 programme pairs your child with a dedicated tutor, built on the same system and materials.

O-Level A Math, taught as a system

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