Weekly Programme · O-Level · E Math & A Math

O-Level Math, taught as a system

In O-Level Math, the marks rarely go on the topic your child cannot do. They go on shaky algebra, the wrong method chosen under pressure, and working the examiner cannot follow. We fix the system behind all three, in both E Math and A Math.

This is the hub for our O-Level Math tuition. Below, we lay out the honest E Math vs A Math decision, then point you to the right page: E Math or A Math. Both run under one weekly programme, with the same lesson architecture, the same skill families and the same mark-proof system. The quality comes from the system, not from which tutor your child is given.

Book a free diagnostic & trial Ask us on WhatsApp →

E Math & A Math Small classes Onsite or Zoom

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

subjects, one system

skill families

step lessons

A Genius Plus Academy tutor guiding an O-Level 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 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 in E Math and in A Math, whichever class they are placed in, and whoever is teaching that week.

Diagnose

Find the actual bottleneck, 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 honest decision

E Math or A Math? Here is the straight answer.

Most families come to us unsure what each subject covers, whether their child should take A Math, and whether taking both is too much. Here is how we explain it at the consult, with no pressure either way.

O-Level E Math

Most students take this

Elementary Mathematics is the core O-Level subject nearly every student sits. It covers numbers, algebra, geometry, trigonometry, and statistics and probability. The questions look applied and word-based, and a lot of the marks are method marks for clear working.

For every student. The goal is reliable working that earns method marks, then pulling a C or B up into the A grades.

See the E Math page →

O-Level A Math

An extra subject

Additional Mathematics is a second, more advanced subject taken alongside E Math. It goes further into algebra: surds, indices and logarithms, trigonometric functions, the binomial theorem, and an introduction to calculus. It is more abstract, and it leans heavily on solid E Math foundations.

For students heading toward science, engineering or H2 Math at JC, and a good idea for anyone keeping those doors open.

See the A Math page →

Who should take A Math?

If your child is comfortable with E Math algebra and is leaning toward the sciences or a JC route, A Math keeps those options open. It is required or strongly advised for many H2 Math and science combinations later. A shaky grip on E Math algebra is the real thing to fix first, not a reason to write A Math off.

Can they take both?

Yes, and many Sec 3 and Sec 4 students do. They are two separate subjects and two separate classes with us, each at the standard per-class fee. Because both run on the same system and the same skill families, the work in one reinforces the other rather than doubling the load.

Is A Math only for "strong" students?

No. A Math has a reputation as a subject only for naturally strong students, and with the right explanations that is simply wrong. Most of what makes A Math feel hard is missing E Math foundations and unclear teaching, both of which the system is built to fix.

Not sure which is right for your child? The diagnostic consult is the simplest way to decide. We will look at the actual algebra and tell you honestly. Book a diagnostic →

Choose your path

Pick the page that fits.

Each O-Level subject has its own page with the full coverage, worked examples and FAQs. The wider Secondary Math programme sits above both, for Sec 1 to 4.

Down a level

O-Level E Math Tuition

Full E Math coverage, earning method marks with clear working, and pulling a C or B up into the A grades. Many start from E8 or F9.

Go to E Math → Down a level

O-Level A Math Tuition

A Math built from E Math foundations: surds, logs, trig functions, the binomial theorem and calculus. Concept first, formula second.

Go to A Math → Up a level

Secondary Math, Sec 1 to 4

The full weekly programme: Lower Sec, O-Level E Math and A Math, and the IP track, all under one system.

See Secondary Math →

Free worked solutions to O-Level and IP past papers, E Math and A Math, with full step-by-step working on every question.

Browse O-Level worked solutions →

How we organise the curriculum

We teach five skill families, not topics in isolation.

O-Level papers test across chapters, so we do too. Each family repeats and compounds across E Math and A Math, which is why our students cope better with mixed-topic papers than students whose tuition goes chapter by chapter.

Algebra Toolkit

The core engine: indices, expansion, factorising, algebraic fractions, changing the subject, simultaneous equations, inequalities and quadratics. If algebra is shaky, both E Math and A Math feel hard.

Graphs & Functions

Interpretation over drawing: gradients, intercepts, equations of lines, quadratic graphs, tangents, and what a graph actually means.

Geometry & Measurement

Structure and reasoning: angle reasoning, congruence and similarity with the scale-factor ladder, circles, mensuration, composite shapes, coordinate geometry and vectors.

Trigonometry

Routine beats panic: right-angle trig, bearings, elevation and depression, the sine and cosine rules, the area formula, and clean calculator habits.

Statistics & Probability

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

"We teach skill families, not topics in isolation, because exams test across chapters. That is why our students handle mixed-topic papers better."

See the thinking, not just the answer

A hard one from each subject, shown the way we teach it.

The reflex we train is the same in every family: read the structure first, then choose the method. Two examples, one from A Math, one from E Math, 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. More A Math →

E Math · Percentage

Reverse percentage, the one most get backwards.

The error is treating "15% off" as "add 15% back". The fix is to name what the given figure represents as a percentage of the original, then divide.

A jacket sells for $68 after a 15% discount.

Find the original price.

$68 is 85% of the original (100% − 15%).

Original = 68 ÷ 0.85 = $80

Check: $80 × 0.85 = $68. ✓

The teaching point: this is the same "what does one unit represent" discipline carried up from Primary into E Math. More E Math →

The lesson architecture

Every class follows the same six steps.

This is what "consistent lesson architecture" means in practice, in both E Math and A Math. 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 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. 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.

O-Level Math here is a good fit if your child:

does the homework well but collapses in the exam;
has shaky algebra that makes both E Math and A Math feel hard;
gets the right answer but loses marks because the working is unclear;
reaches for the first method they recognise, not the right one;
studies a lot but does not seem to improve.

Already strong

Many join because they are inconsistent: losing marks on easy questions and panicking on unfamiliar formats. We sharpen reliability.

Stuck in the middle

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

Far behind

We have worked with students who started from E8 or F9. 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 practice." We start with "what is the actual bottleneck?"

More volume only helps if it targets the real gap. So your trial doubles as a diagnostic, and it is also where we settle the E Math or A Math question honestly. 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 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 O-Level Math textbooks and workbooks

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 O-Level 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 Math	Wednesday, 7pm to 9pm	Bukit Timah (Coronation Plaza)	Places available
S3 Math	Saturday, 9am to 11am	Punggol (Edgedale Plains)	Places available
S3 Math	Sunday, 1pm to 3pm	Bukit Timah (Coronation Plaza)	Places available
S3 A Math	Tuesday, 7pm to 9pm	Punggol (Edgedale Plains)	Places available
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 your level when we place your child.

Where we run O-Level 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 3 and 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.

O-Level 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. Here is the path most families take.

Book a diagnostic

Tell us your child's level and school, and whether it is 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 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 →

Questions parents ask

What is the difference between E Math and A Math?

E Math, Elementary Mathematics, is the core O-Level subject nearly every student sits: numbers, algebra, geometry, trigonometry, and statistics and probability. A Math, Additional Mathematics, is a separate, more advanced subject taken alongside it, going further into surds, logarithms, trigonometric functions, the binomial theorem and an introduction to calculus. A Math leans heavily on solid E Math foundations.

Should my child take A Math?

If your child is comfortable with E Math algebra and is leaning toward the sciences or a JC route, A Math keeps those options open and is required or strongly advised for many later H2 Math and science combinations. A shaky grip on E Math algebra is the thing to fix first, not a reason to write A Math off. The diagnostic consult is the simplest way to decide, and we will tell you honestly.

Can my child take both E Math and A Math with you?

Yes, and many Sec 3 and Sec 4 students do. They are two separate classes, each at the standard per-class fee, so there are two lesson slots. Because both run on the same system and skill families, work in one reinforces the other. We can plan the timetable with you at the consult so both fit around school.

Is A Math only for naturally strong students?

No. A Math has that reputation, and with the right explanations it is simply wrong. Most of what makes A Math feel hard is missing E Math foundations and unclear teaching, both of which our system is built to fix: concept first, formula second, with fast feedback on every mistake.

My child does the homework but still fails the exam. What is different here?

Most tuition just adds volume. We change the error pattern instead, using the diagnostic, the Mistake Taxonomy that tags each wrong question by type, the mark-visible working protocol, and a timed simulation and debrief loop. That targets the gap that causes exam collapse, rather than practising what your child can already do.

How much does it cost?

O-Level Math uses the same fee structure as our upper-Primary classes. We quote the exact figure for your child's subject 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.

O-Level Math, taught as a system

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