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Sec 1 & Sec 2 · G1, G2 & G3 Science
Lower Secondary Science Tuition in Singapore — Sec 1 & Sec 2
Lower secondary science tuition is for the moment Science stops feeling like primary school. Your child did fine at PSLE, and now the Sec 1 test is about particles nobody can see, densities that need units, and answers that must explain why.
We match you with a verified 1-to-1 tutor who knows the MOE lower secondary syllabus and the subject level your child takes — G1, G2 or G3. Free matching, no contract, no commitment.
Entry 01Observation
Why Sec 1 Science Feels So Different From PSLE Science
Sound familiar? Your child came home from PSLE with a Science grade you were happy with. Two terms into Sec 1, the first common test is a shock, and the explanation you get is “it’s just harder”. You are not alone in this, and it is rarely about effort.
Here is what actually changed. Lower secondary Science is still one general subject — MOE’s syllabus says it continues the general science of primary school before students take physics, chemistry and biology separately in upper secondary. But it asks for different skills. Students now measure and calculate, reason with models of things too small to see, and write explanations that link a cause to an effect. A child who learned to recall the right keywords for primary school science can find that habit no longer earns the marks.
The good news is that this gap is specific. It is almost always one model, one kind of calculation, or one answering habit — and once a tutor names it, progress comes quickly. If your child is still in P6, our PSLE Science guides are the place to start.
Experiment report · P6 → Sec 1
- Aim
- Find out why a child who did well in PSLE Science can struggle by the first Sec 1 common test.
- Observation
- Marks drop in topics the child cannot see or touch — particles, atoms, light rays — and in any question that needs a number with a unit.
- Explanation
- Lower secondary science asks students to reason with models and measurements, not just recall facts. That is a different skill from the one primary science mostly rewarded, and it has to be taught.
- Conclusion
- The gap is specific and fixable. Name the model or skill your child is missing, rebuild it, then practise the answering style the school expects.
What changes between P6 and Sec 1
| Area | Primary 6 | Sec 1 and Sec 2 |
|---|---|---|
| Numbers | Mostly describing and comparing what happens. | Measuring with instruments, using SI units, and calculating — density = mass ÷ volume is one of the first. |
| Models | Ideas you can mostly observe. | Abstract models: the particulate nature of matter, atoms and molecules, the ray model of light. |
| Practical work | Guided activities. | Using the microscope, measuring cylinder and electronic balance, and spotting zero and parallax errors. |
| Answers | Keywords often enough. | Explanations that link cause to effect, in precise scientific language. |
Scroll the table sideways to see every column.
Already know which topic your child is stuck on? Tell us and we’ll match a tutor for it
Entry 02The syllabus
What the Lower Secondary Science Syllabus Covers in Sec 1 and Sec 2
MOE’s lower secondary science syllabus is built on five themes and sixteen topics. MOE describes the themes as the foundational concepts students need for physics, chemistry and biology at upper secondary — so what your child builds now is what Sec 3 stands on.
G2 and G3 students follow the same themes and topics. MOE marks some learning outcomes as optional for G2, and the box under each theme shows examples of them. MOE does not divide the topics between Sec 1 and Sec 2, so each school sets its own order; a good tutor follows your child’s school sequence.
The Scientific Endeavour
MOE’s question: “What is the nature of scientific knowledge, and how do we practise science?”
- 01The Scientific Endeavour
Optional at G2
Understanding that measurement errors can be unpredictable (human error) or consistent (an instrument’s zero error).
Where students slip
Treating this first topic as an easy introduction. Accuracy, precision, zero error and parallax error come back in every practical for the next four years.
Diversity
MOE’s question: “How do we classify things and find out their properties?”
- 02Exploring Diversity of Matter by its Physical Properties
- 03Exploring Diversity of Matter by its Chemical Composition
- 04Exploring Diversity of Matter using Separation Techniques
Optional at G2
Finding the volume of irregular objects by displacement, and properties such as strength, hardness and flexibility.
Where students slip
Density calculations without units, and mixing up elements, compounds and mixtures when a question describes them in words.
Models
MOE’s question: “Why do we build models, and how do we know they represent reality?”
- 05Ray Model of Light
- 06Model of Cells – the Basic Unit of Life
- 07Model of Matter – The Particulate Nature of Matter
- 08Model of Matter – Atoms and Molecules
Optional at G2
Refraction and the dispersion of white light, using the microscope to identify cell parts, and explaining melting and boiling with models.
Where students slip
Saying particles themselves expand or melt. The model is about how particles are arranged and how they move, and marks are lost on that one word.
Interactions
MOE’s question: “How do interactions between systems help us understand and improve our environment?”
- 09Application of Forces and Transfer of Energy
- 10Transfer of Heat Energy and its Effects
- 11Chemical Changes
- 12Interactions within Ecosystems
Optional at G2
Pressure calculations, work as energy transfer, and the reactions of acids with metals and with carbonates.
Where students slip
Mixing up mass and weight, and describing a chemical change without saying that a new substance is formed.
Systems
MOE’s question: “How do the parts of a system work together, and what happens when one fails?”
- 13Electrical Systems
- 14Human Digestive System
- 15Transport Systems in Living Things
- 16Human Sexual Reproductive System
Optional at G2
Investigating series and parallel arrangements, calculating the cost of using electrical appliances, the effect of enzymes, and xylem and phloem transport.
Where students slip
Believing current is “used up” around a circuit, and naming organs in the digestive system without explaining what each one does.
Entry 03Subject levels
G1, G2 and G3 Science Under Full Subject-Based Banding
Since the 2024 Secondary 1 cohort, MOE has replaced the Express, Normal (Academic) and Normal (Technical) streams with three subject levels — G1, G2 and G3. Every student in Sec 1 or Sec 2 today is in a Full SBB cohort, so your child takes Science at one of these levels.
G3mapped from Express
The full G2/G3 syllabus — all five themes, all sixteen topics, every learning outcome.
G2mapped from Normal (Academic)
The same themes and topics as G3, with some learning outcomes marked optional by MOE.
G1mapped from Normal (Technical)
Its own MOE syllabus: an introductory topic on laboratory measurements and procedures, then three modules — Machines Around Us, Our Environment, and Our Body and Health.
How G2 and G3 Science differ
The difference is depth, not a different subject. Examples of outcomes MOE marks optional for G2 include refraction and the dispersion of white light, the reactions of acids with metals and with carbonates, investigating series and parallel arrangements, calculating the cost of using electrical appliances, and how xylem and phloem move water and food through a plant. A G3 student is expected to handle all of them, so a tutor working with a G3 student spends more time on calculation and on the less familiar applications.
Moving to a different science level
Your child’s starting level is set at Secondary 1 posting. MOE posts students through three Posting Groups by PSLE score, and the group indicates the starting level for most subjects:
| PSLE Score | Posting Group(s) | Indicative level for most subjects at start of Sec 1 |
|---|---|---|
| 4 – 20 | 3 | G3 |
| 21 – 22 | 2 or 3 | G2 or G3 |
| 23 – 24 | 2 | G2 |
| 25 | 1 or 2 | G1 or G2 |
| 26 – 30 (with AL7 or better in EL and MA) | 1 | G1 |
Scroll the table sideways to see every column.
Science can start at a more demanding level than the rest of your child’s subjects if their PSLE Science grade qualifies:
| Indicative level of most subjects | PSLE Science grade | Can offer Science at |
|---|---|---|
| G2 | AL 5 or better (Standard) | G3 |
| G1 | AL 5 or better (Standard) | G2 / G3 |
| G1 | AL 6 (Standard) or AL A (Foundation) | G2 |
Scroll the table sideways to see every column.
“Students may also offer the subjects above at a more demanding level based on their performance in secondary school. Students may reach out to their secondary schools and teachers for more details.”
MOE does not publish a single mark that triggers a move, so the school is the place to ask. Moves work in both directions: a student can drop to a less demanding level based on performance and the school’s holistic assessment, and move back up later as their confidence grows. If your child is aiming to move up, a tutor can cover the G3-only outcomes before the school makes its decision.
Entry 04Checkpoint
Sec 2 Science Tuition: What the End of Sec 2 Decides
Sec 2 is the last year of general science. From Sec 3, science splits into the separate disciplines. Science is on MOE’s list of compulsory upper secondary subjects; students taking mainly G1 subjects must offer Science and/or Computing.
What carries into Sec 3
- The particulate model and atoms and molecules — the base of chemistry.
- Forces, energy and heat transfer — the base of physics.
- Electrical systems — series and parallel, current and energy.
- Cells, transport and the human body systems — the base of biology.
- Measurement habits: units, readings, zero and parallax errors.
What to do during Sec 2
- Close any Sec 1 gaps before they meet a full upper secondary syllabus.
- Practise explaining answers in full sentences, with the cause and the effect.
- Ask the school how Sec 3 subject combinations are decided, and when.
- If moving up a subject level is on the table, start the G3-only outcomes early.
Which sciences your child takes in Sec 3 — and whether as separate subjects or a combined paper — is a subject-combination question. Our subject combination guide walks through it, our secondary science tuition page compares Pure and Combined Science, and combined science tuition covers the Sec 3–4 combined paper.
One more change worth knowing: MOE says that from the 2027 graduating cohort, students sit the new Singapore-Cambridge Secondary Education Certificate (SEC) examination, with different papers for each subject level. Today’s Sec 1 and Sec 2 students are working towards the SEC rather than the O-Level.
Entry 05Corrections
Common Lower Secondary Science Mistakes (and How a Tutor Fixes Them)
None of these is about intelligence. They are habits, and they show up in the working and the wording long before they show up on a report book.
Model of Matter
Student’s answer
When the metal is heated, its particles expand.
Correction
When the metal is heated, its particles gain energy and move further apart. The particles themselves stay the same size.
Why it happens: The particulate model is about arrangement and movement. One wrong word turns a correct idea into a wrong answer.
Forces and Energy
Student’s answer
An astronaut has less mass on the Moon.
Correction
An astronaut has the same mass on the Moon but less weight, because the gravitational pull there is weaker.
Why it happens: Mass and weight are taught together and confused together. The fix is a habit: write the unit first (kg for mass, N for weight), then the sentence.
Physical Properties
Student’s answer
Density = 120 ÷ 40 = 3
Correction
Density = mass ÷ volume = 120 g ÷ 40 cm³ = 3 g/cm³
Why it happens: Primary science rarely asked for units. Lower secondary marks the formula, the substitution and the unit separately.
Ray Model of Light
Student’s answer
The angle of incidence is measured from the mirror.
Correction
The angle of incidence is measured from the normal — the line drawn at 90° to the mirror.
Why it happens: Students measure the angle they can see. A tutor makes them draw the normal first, every time, until it is automatic.
Electrical Systems
Student’s answer
The current is used up by the first bulb.
Correction
In a series circuit the current is the same at every point. The energy is transferred in the bulbs, not the current.
Why it happens: It is the most common electricity misconception, and it carries straight into upper secondary physics if nobody corrects it.
Chemical Changes
Student’s answer
Melting ice is a chemical change because it looks different.
Correction
Melting is a physical change: no new substance is formed, and it can be reversed by cooling.
Why it happens: A new substance being formed is the test. Students who learn the test, not a list of examples, get the unfamiliar questions right.
Entry 06Rates
Sec 1 & 2 Science Tuition Rates in Singapore (2026)
Lower secondary science tuition costs $30–$40 an hour with a part-time tutor, up to $60–$85 with a current or former MOE teacher. Rates are per hour for 1-to-1 home tuition in Sec 1 and Sec 2. These are the same lower secondary rates we publish for every subject.
| Level | Part-Time Tutor | Full-Time Tutor | Ex/Current MOE Teacher |
|---|---|---|---|
| Lower Secondary (Sec 1–2) | $30–$40 | $45–$55 | $60–$85 |
Scroll the table sideways to see every column.
Getting value from the tier
For most Sec 1 and Sec 2 students, a part-time undergraduate tutor with strong science results is the best value — the content is fresh in their mind, and the rate leaves room for a second session in the weeks before a test. Consider a full-time tutor or an MOE-experienced teacher if your child is moving up a subject level, or if gaps have built up across several themes. Full ranges for every level are on our tuition rates page, and secondary school tuition covers the other subjects at this level, including secondary maths.
Entry 07Checklist
What to Look For in a Lower Secondary Science Tutor
Qualifications matter, but at this level fit matters more. These are the four things we check when we match a tutor to a Sec 1 or Sec 2 student.
Comfortable across all three sciences
Sec 1 and Sec 2 Science mixes physics, chemistry and biology in one subject, so a tutor who only enjoys one of them will leave gaps in the other two.
Knows the subject level your child takes
G1, G2 and G3 cover different content and depth. Ask whether the tutor has taught your child’s level, not just “lower secondary”.
Teaches the models, not just the answers
The particulate model, atoms and molecules and the ray model of light are where many lower secondary marks are gained or lost. A good tutor makes your child draw and explain them.
Builds measurement and practical habits
Units, careful readings, zero and parallax errors — small habits now that pay off in every upper secondary practical.
Entry 08Method
How TutorBee Matches You With a Sec 1 or Sec 2 Science Tutor
We are a matching service, not a class you sign up for. Every tutor we recommend is verified and screened, and matching is free — you pay the tutor for lessons taught.
Step 1: Tell us about your child
Share the level (Sec 1 or Sec 2), the Science subject level (G1, G2 or G3), the topics that are causing trouble, your area and your budget.
Step 2: We recommend a tutor
We review verified tutors whose experience fits your child’s level and needs, and recommend one — usually within 24 hours.
Step 3: Lessons begin
You confirm the schedule with the tutor directly. Free matching, no contract, and no obligation to continue if the fit isn’t right.
Entry 09Questions
Lower Secondary Science Tuition FAQ
Still deciding? Send us your child’s level and topics and we’ll advise
Find a Lower Secondary Science Tutor
Tell us your child’s level, whether they take G1, G2 or G3 Science, and the topics causing trouble. We’ll recommend a verified tutor who fits — usually within 24 hours.
Free matching. No contract, and no obligation to continue if the fit isn’t right.