Programs/Upper Secondary/Combined Bio + Chem

Combined Bio + Chem Tuition.

Combined Bio + Chem (sat at O-Level / N-Level) — precise Biology vocabulary, structured Chemistry calculation, both halves taught with the same answer-first mindset.

Class sizeMax 10
MOE-alignedRefreshed yearly
BranchesBukit Batok · Yishun
TrialFree
If this sounds familiar

Knows the content. Stuck at B.

Combined Sci students coast on memorisation through Sec 3 — and it works for a while. Then Sec 4 papers shift to application: explain why, predict the outcome, link the process to the context. The memorising stops paying off. Marks plateau at B+ and parents watch the revision hours climb with no movement on the grade.

"I revised everything. Same grade as last time."

We teach Combined Sci as application from week one. Every Bio and Chem topic ends with "now use it" — apply to a context, predict the outcome, explain the link. The shift markers reward — and the B+ ceiling cracks.

Yes — that's my child →
Curriculum · MOE-aligned

What we cover.

Every topic in the Sec 3 / 4 (G3 / G2) Combined Bio + Chem syllabus, taught in the order that builds skill. We refresh the materials every year against the latest SEAB exam reports.

·
Biology — Cells & transport
Cell structure, diffusion, osmosis, active transport.
·
Biology — Nutrition & respiration
Photosynthesis, digestion, gas exchange, aerobic / anaerobic respiration.
·
Biology — Coordination & reproduction
Nervous system basics, hormones, sexual reproduction.
·
Biology — Genetics & molecular
DNA structure, monohybrid crosses, mutations.
·
Biology — Ecology
Energy flow, nutrient cycles, human impact.
·
Chemistry — Atoms & bonding
Atomic structure, ionic / covalent bonding.
·
Chemistry — Mole concept
Stoichiometry within combined-syllabus depth.
·
Chemistry — Acids, bases & salts
Reactions, preparations, ionic equations.
·
Chemistry — Qualitative analysis
Cation, anion, gas tests.
·
Chemistry — Redox & electrolysis
Half-equations, electrolysis.
·
Chemistry — Energy & rate
Exothermic / endothermic reactions, factors affecting rate.
·
Chemistry — Organic basics
Alkanes, alkenes, alcohols.
How we teach it

Methodology.

The methods we teach with — applied across the term, calibrated to where each student needs them most.

01
Two halves, two methods
Biology taught with chain-answer templates; Chemistry with answer-chain + calculation working formats.
02
Vocabulary precision
Biology marks live and die on phrasing. Weekly word-precision practice.
03
Mole format for Chem calculations
The three-row format used in Pure Chem, scaled for Combined depth.
04
Timed practice · teacher-initiated
Real-format timed practice (teacher-initiated for students who need it).
05
Small classes
Max 10 — combined students often need different help on each half.
06
Calibrated to the class
Pacing, examples and topic emphasis are tuned to the cohort in front of us. Every Combined class arrives with a different mix of strengths and gaps across the two halves — so each session pulls its weight rather than running from a fixed script.
07
Every WA tracked & teacher-monitored
Weekly Assignment results are logged against each student by topic, by half (Bio vs Chem), by week. Teachers review trajectories weekly — not at term-end — so a wobble in one half gets caught and scheduled back in before it drags the combined grade.
Where students lose marks

Common pitfalls
& how we fix them.

Most lost marks are habit, not knowledge. We track them, name them, and drill them out.

!
Biology answers stopping at the first reason
"Cells have mitochondria to produce ATP" earns 1 of 3. Markers want the full chain: organelle (mitochondria) → process (aerobic respiration, glucose + O₂) → outcome (ATP produced) → application (energy used for muscle contraction / active transport). Combined timing is tight, so students truncate by reflex. Costs 2 marks per Bio OEQ. Fix: a structure → function → process → application template used on every Bio answer from week one, drilled until the four-step chain comes out under exam pressure.
!
Bio vocabulary — "absorb" vs "diffuse" vs "transport"
"Glucose is absorbed in the small intestine" earns the mark; "glucose is transported in the small intestine" does not. Markers want specific mechanism words — absorption (across the gut wall), diffusion (down a gradient), active transport (against, requires ATP). Combined Bio mark schemes are phrase-specific. Bleeds 1-2 marks per Bio answer. Fix: a per-topic vocabulary card system tested fortnightly with mark-scheme phrasing so the right verb comes out first time, every time.
!
Diffusion vs osmosis vs active transport
Diffusion: all particles, down a concentration gradient. Osmosis: water only, down a water-potential gradient. Active transport: against the gradient, requires ATP. Students mix all three on "how does glucose enter a cell" — and the answer that confuses water potential with concentration gradient loses 2-3 marks. Fix: a weekly comparison table — particle type, gradient direction, energy requirement, membrane involvement — drilled until each process is recognised in five seconds and the right one named on every transport question.
!
QA tests — right reagent, incomplete reasoning
Test for Cl⁻: student writes "AgNO₃ added, white precipitate" (1 of 3 marks). Marker wants the full chain: reagent (AgNO₃) → Cl⁻ ion present → Ag⁺ + Cl⁻ react → AgCl forms (white precipitate, insoluble) → confirms chloride. Same gap on sulfate and carbonate tests. Combined timing is tight, so the reasoning is the first thing cut. Fix: a weekly QA template — reagent → observation → ionic equation → ion identity — drilled until the full chain is automatic.
Sample technique

Why Combined Bio + Chem rewards method, not memory.

A typical question: "Explain why water moves into the cell when the surrounding solution is dilute." Students who memorised 'osmosis' get 1 mark. Students taught the answer chain — water potential gradient, direction, process, membrane — get 3. The chain is the same in Combined and Pure; we teach it the same way.

Inside the lesson

What a typical lesson looks like.

No surprises. The structure is the same week to week — students settle in fast.

  1. 0–10 min · Recap.
  2. 10–35 min · Topic walkthrough (alternates Bio / Chem).
  3. 35–60 min · Drill.
  4. 60–85 min · Independent practice.
  5. 85–100 min · Review & homework.
Real student · Real result

"My child scored A1 for Combined Science in his O level exam. He joined Genie since March 2025. I’m impressed with the result. Thanks for walking through this journey with him."

Sheauling Lee · Google review
Transparent fees

One price. No surprises.

✓ No deposit · No admin · No GST surprises
Sec 3
Sec 3 Combined Sci (Bio+Chem) · Single Subject
8-week term · 2 hours per session · Max 10 students · Materials included
$528
Per term, all-in
$66.00
Per session
Book free trial
Most popular · Save 10%
Sec 3 Combined Sci + E Math · Bundle
Science + Math · Coordinated scheduling
$950.40
$475.20 per subject
$59.40
Per session, per subject
Book free trial
Sec 4
Sec 4 Combined Sci (Bio+Chem) · Single Subject
8-week term · 2 hours per session · Max 10 students · Materials included
$544
Per term, all-in
$68.00
Per session
Book free trial
Most popular · Save 10%
Sec 4 Combined Sci + E Math · Bundle
Science + Math · Coordinated scheduling
$979.20
$489.60 per subject
$61.20
Per session, per subject
Book free trial

Each term covers 8 weekly lessons. Missed lessons are credited into the next term — credit applies for public holidays, school holidays, official school activities, and absences with a medical certificate.

Where students come from

Schools we serve.

Both branches see Sec 3 / 4 Combined Science students from across the north and west of Singapore — across both G3 and G2 streams. A snapshot of the schools currently in our classes.

Recent Sec 3 / 4 (G3 / G2) Combined Sci · Bio + Chem student schools include: Bukit Batok Secondary · Bukit View Secondary · Hillgrove Secondary · Swiss Cottage Secondary · Dunearn Secondary · Bukit Panjang Government High · Greenridge Secondary · West Spring Secondary · Fuhua Secondary · Hua Yi Secondary · Northbrooks Secondary · Yishun Town Secondary · Chong Boon Secondary · Ahmad Ibrahim Secondary · Naval Base Secondary · Orchid Park Secondary · North View Secondary · Peirce Secondary · Anderson Secondary · Sembawang Secondary · and more
FAQ

Common questions.

Bio + Chem vs Phys + Chem — which to pick?
School decision usually. We teach whichever you take. Phys+Chem suits more numerate students; Bio+Chem suits stronger writers.
Is your Combined Sci aligned to the latest syllabus?
Yes.
Do you cover G2 stream?
Yes — separated where numbers allow.
How big are the classes?
Max 10.
Where is your Bukit Batok Combined Sci (Bio+Chem) centre?
Blk 265 East Ave 4. Bukit Batok branch
Where is your Yishun centre?
417 Yishun Ave 11 #01-339. Yishun branch
Do you also offer E Math?
Yes — most Combined Sci students take E Math with us too. G3 E Math. 10% off when you take 2 or more subjects.
How do I book a free trial?
WhatsApp 9181 7689.
Can my child catch up if they join mid-term?
Yes — we can arrange short 1-to-1 bridging sessions to fast-track new joiners up to where the current class is. Most students catch up in 2–3 sessions, then slot into the regular class without falling behind.
Related programs

Other Genie classes parents pair with this one.

Class schedule · Current term

When this class
runs.

Combined Bio + Chem (Sec 3 & 4) runs at both branches — pick the slot and branch that suits you. Free trial at either centre. WhatsApp us to confirm availability.

01 / Bukit Batok

Blk 265 East Ave 4

  • Sec 3Fri · 6:30pm – 8:30pm
  • Sec 4Tue · 4:30pm – 6:30pm
02 / Yishun

417 Yishun Ave 11 #01-339

  • Sec 3Wed · 5pm – 7pm
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