A young learner in Bangkok might count market items in Thai baht, notice repeating shapes on a temple roof, or wonder why a plant grows towards a window. A student in Chiang Mai may enjoy an algebra puzzle, while a class in Phuket investigates water and weather. These everyday questions are a welcoming starting point for Maths, Science and language learning. This guide is for students, parents and schools in Thailand (ประเทศไทย) who want trusted educational resources, a realistic way to prepare for an Olympiad, and help deciding whether an independent School Connect Olympiad (SCO) activity suits their needs. You will find twenty original worked practice questions—no registration required to read them.
Begin with the learner’s actual Thai school level
Thailand’s basic school-level names include Prathom 1–6 (ประถมศึกษาปีที่ 1–6) and Mathayom 1–6 (มัธยมศึกษาปีที่ 1–6). Schools with international or bilingual curricula can use other year labels. A class number on an international Olympiad site should never replace the school’s current course plan. Begin with topics from the child’s actual Maths, Science or English class before moving to unfamiliar challenge questions.
| Typical stage | Helpful preparation areas | A simple practice idea |
|---|---|---|
| Prathom 1–2 | Counting, place value, shapes, everyday observations and simple reading. | Use paper circles to make ten and explain a sum. |
| Prathom 3–4 | Multiplication, division, time, money, plant life and sentence structure. | Solve a two-step story using imaginary baht prices. |
| Prathom 5–6 | Fractions, perimeter, percentages, variables in fair tests and comprehension. | Draw a rectangle and trace all four sides. |
| Mathayom 1–3 | Algebra, ratios, geometry, speed and evidence-based scientific explanations. | Solve an equation, then check by substitution. |
| Mathayom 4–6 | Sequences, functions, probability, calculus concepts and advanced subjects. | Explain a solution using steps and units, not just a choice letter. |
The topics are teaching suggestions, not a claim that Thailand’s Ministry of Education assigns every lesson to the same term in every school. Your class teacher can confirm the relevant current curriculum. Grade labels below are approximate and do not establish SCO or POSN examination eligibility.
Two trustworthy Thailand learning libraries from IPST
Thailand’s Institute for the Promotion of Teaching Science and Technology (IPST) supports teaching in Maths, Science and Technology. Its official June 2026 learning announcement describes SciMath as a free public learning library with videos, experiments, interactive activities, lesson plans, teacher guides, articles and e-books. This is a useful starting point before any optional competition purchase.
| Resource | A good use for a Thai student | Access note |
|---|---|---|
| SciMath (คลังความรู้ SciMath) | Browse Thai-language Maths, Science and Technology explanations, videos and practical learning content. | Public educational resources; individual features may vary. |
| My IPST | Search resources by school textbook, grade and subject; useful to teachers and students revisiting a lesson. | The platform includes a sign-in option, so check which materials are available to your account. |
| IPST e-services / Project 14 | Find curriculum-linked online lessons and supplementary teaching guidance. | Choose the actual grade and approved course before relying on a lesson. |
| SCO subject directory | Explore separate, independent subject-level syllabuses and school-practice ideas. | SCO resources are supplementary, not official Thai textbooks. |
Try a learning-first approach: open a familiar IPST lesson, identify a concept the student understands, and solve two fresh examples with a notebook. If an SCO sample is interesting, use it afterwards as extra practice. This sequence helps families distinguish normal school learning from optional commercial competition services.
Thailand’s official national Olympiad path is not the SCO path
The POSN Foundation’s mathematical Olympiad programme develops advanced Mathematics, Computer Science, Chemistry, Biology and Physics talent through regional and Bangkok centres, selection examinations, two training camps and national-level competitions. It describes applications commonly around July, a selection examination around August, and subsequent training stages. These are a general programme description, not confirmed fresh dates or an open seat for a student in October 2026. Families should follow the current Thai-language notice from their nearest eligible centre.
The POSN examination archive contains genuine Thai-language selection and national contest papers, including Mathematics. These papers can be valuable to suitably prepared secondary learners, but they may be well beyond primary-school level. A Grade 2 child does not need to practise national-team proof problems to enjoy Maths.
Thailand’s international achievements are recorded by the official International Mathematical Olympiad (IMO). In 2026, Thailand placed 30th with a six-student team, earning one gold, one silver and four bronze medals. This is a national-team result achieved through separate qualification and preparation. SCO also calls its independent school programme an International Maths Olympiad, but it is not the official national-team IMO and an SCO certificate does not give entry to POSN camps or Thailand’s IMO team.
How an independent SCO programme might fit
SCO publishes a subject directory including Maths, Science, English, Mental Ability and other school-level subjects. There is also an individual registration page and a school registration route. Families can use its syllabus and sample-paper pages as extra learning resources even if they do not join an examination.
| Before deciding | What to confirm | Why it matters |
|---|---|---|
| Subject and grade | Does the current SCO subject actually accept the student’s school stage, country and grade? | The platform’s ‘Class’ labels may not align exactly with Prathom/Mathayom years or a bilingual school course. |
| Language and support | What examination language is offered, and what support is officially permitted? | Thai-language practice at home does not guarantee a Thai-language competition paper. |
| Date, mode and local time | Which cycle, date, time zone and online/offline mode appear in the actual confirmation? | A public schedule does not establish a confirmed Thailand-specific seat or session. |
| Total payment | Which currency, taxes, payment service and refund terms appear at checkout? | The portal currently advertises some SCO subjects at ₹200 / US$12; a final Thai baht total is not verified. |
| Resources and reports | Where can students find free chapter-wise materials, videos and practice questions? | Chapter-wise lessons, linked videos and practice questions are free and continuously improved. Check exam-specific services separately. |
| Awards and recognition | What conditions apply to any certificate, award or later round? | Participation never guarantees prizes, scholarships, university admission or official national-team selection. |
The 2026–27 SCO subject calendar lists examination sessions but does not confirm a Thailand-local appointment for a particular student. School Connect Olympiad provides free chapter-wise learning materials, linked educational videos and practice questions. The learning resources are continually updated and improved. Separate exam registration, local timing, payment and account-specific results should be confirmed using the relevant event instructions.
Five short activities for real learning
1. Use pretend Thai baht for multiplication
Imagine a school shop with four identical notebooks labelled 35 baht each. A child can write 35 + 35 + 35 + 35 or 4 × 35, arriving at 140 baht. This is an invented practice example, not today’s shop price. Ask the learner whether the total seems sensible before using a calculator.
Try it: Draw four boxes labelled ’35 baht’. Combine tens and units separately, then check the total.
2. Make a fair Science observation
Two similar seedlings grow in similar pots. One is kept in brighter light; both receive the same amount of water and have similar soil. What could you observe? Height, leaf colour or number of leaves. A fair comparison changes one key factor while controlling the others. Keep activities safe and supervised.
Try it: Make a simple two-column table. Discuss what stayed the same and what changed.
3. Explain ratio parts with coloured tokens
Suppose a collection of 45 tokens is divided into red and blue in the ratio 2:3. Five equal ratio parts represent 45 tokens, so each part is nine. Blue uses three parts, or 27 tokens. Check that red has 18 and that both groups total 45.
Try it: Use five circles for ratio parts and place nine dots in each. Colour two red and three blue.
4. Use careful English reading for Maths stories
The words ‘altogether’, ‘remaining’, ‘each’ and ‘difference’ hint at relationships, but students must read the whole question to choose an operation. A child may first explain the idea in Thai, then practise saying the question in English if that helps. Reading for meaning comes before speed.
Try it: Ask a child to restate a word problem without using the numbers, then select an operation.
5. Verify an algebra answer instead of trusting a guess
Solve 4x + 5 = 33 by subtracting five, then dividing by four to obtain x = 7. Substitute it into the original equation: 4×7 + 5 = 33. This shows why the answer is correct and makes a copying mistake easier to catch.
Try it: Write a new equation with x = 6 and ask a classmate to work backwards.
20 original Maths, Science, English and reasoning questions
These twenty questions and explanations are original educational examples, written for Thai students and families. They are not copied from Thailand’s POSN selection papers, the official IMO, Thai school examinations or SCO’s actual tests. The suggested Prathom or Mathayom grade is a guide to difficulty, not a promise of a subject’s official examination pattern.
Question 1 (Primary 1 · addition). A learner has 18 coloured paper circles and makes 7 more. How many circles altogether?
A. 25 | B. 24 | C. 26 | D. 21
Answer: A — 25. 18 + 7 = 25. Make twenty by adding two first, then add the other five.
Question 2 (Primary 2 · subtraction). A group drew 43 stars and coloured 18. How many have not yet been coloured?
A. 35 | B. 25 | C. 31 | D. 61
Answer: B — 25. 43 − 18 = 25. Check by adding 25 + 18 to obtain 43.
Question 3 (Primary 3 · multiplication). Six boxes hold nine classroom counters each. How many counters are there?
A. 15 | B. 45 | C. 54 | D. 63
Answer: C — 54. Six equal groups of nine give 6 × 9 = 54 counters.
Question 4 (Primary 4 · Thai baht word problem). One fictional school notebook costs 35 Thai baht. How much would four identical notebooks cost?
A. 70 baht | B. 105 baht | C. 135 baht | D. 140 baht
Answer: D — 140 baht. 35 × 4 = 140 baht. The example price is invented for practice, not a real shop offer.
Question 5 (Primary 5 · fractions). What is three quarters of 48?
A. 36 | B. 12 | C. 24 | D. 32
Answer: A — 36. One quarter of 48 is 12. Multiply by three to get 36.
Question 6 (Primary 6 · perimeter). A rectangle is 11 metres long and 7 metres wide. What is its perimeter?
A. 77 m | B. 36 m | C. 18 m | D. 54 m
Answer: B — 36 m. The outside boundary is 11 + 7 + 11 + 7 = 36 metres.
Lower- and upper-secondary Maths
Question 7 (Mathayom 1 · algebra). Solve 4x + 5 = 33.
A. 9 | B. 8 | C. 7 | D. 6
Answer: C — 7. Subtract 5 to get 4x = 28. Divide by 4 to find x = 7; check 4×7 + 5 = 33.
Question 8 (Mathayom 2 · ratios). A club has red and blue tokens in a 2:3 ratio, with 45 tokens altogether. How many are blue?
A. 18 | B. 15 | C. 30 | D. 27
Answer: D — 27. There are five equal parts, each worth 45 ÷ 5 = 9. Blue tokens occupy three parts: 3×9 = 27.
Question 9 (Mathayom 3 · Pythagoras). A right triangle has perpendicular sides 9 cm and 12 cm. What is the hypotenuse?
A. 15 cm | B. 21 cm | C. 18 cm | D. 3 cm
Answer: A — 15 cm. 9² + 12² = 81 + 144 = 225; the square root is 15 cm.
Question 10 (Mathayom 4 · probability). Two fair six-sided dice are rolled. What is the chance their sum is seven?
A. 1/12 | B. 1/6 | C. 1/3 | D. 1/2
Answer: B — 1/6. Six of the 36 ordered outcomes sum to seven: (1,6), (2,5), (3,4), (4,3), (5,2), (6,1). 6/36 = 1/6.
Question 11 (Mathayom 5 · sequences). An arithmetic sequence starts 7, 12, 17, 22, … . What is its 15th term?
A. 67 | B. 72 | C. 77 | D. 82
Answer: C — 77. The common difference is 5. Term 15 is 7 + 14×5 = 77.
Question 12 (Mathayom 6 · calculus). For f(x) = 2x³ − 5x, what is f′(2)?
A. 24 | B. 17 | C. 12 | D. 19
Answer: D — 19. Differentiate: f′(x) = 6x² − 5. Substitute 2: 6×4 − 5 = 19.
Science observation and calculations
Question 13 (Primary 3 · plant science). Which part of a plant usually absorbs water from soil?
A. Roots | B. Flowers | C. Fruit | D. Petals
Answer: A — Roots. Roots absorb water and help hold the plant in place.
Question 14 (Primary 4 · water cycle). When water vapour cools and forms tiny water droplets, what is the change called?
A. Evaporation | B. Condensation | C. Melting | D. Freezing
Answer: B — Condensation. Cooling water vapour into liquid droplets is condensation.
Question 15 (Primary 5 · fair test). To compare the effect of sunlight on two seedlings, which plan is best?
A. Change light, soil and water together | B. Choose different species | C. Keep water, soil and plant type alike while changing light | D. Never record the results
Answer: C — Keep water, soil and plant type alike while changing light. A fair test changes sunlight deliberately while keeping other key conditions as similar as possible.
Question 16 (Primary 6 · mass and volume). An object has mass 150 g and volume 50 cm³. What is its density?
A. 200 g/cm³ | B. 100 g/cm³ | C. 0.33 g/cm³ | D. 3 g/cm³
Answer: D — 3 g/cm³. Density = mass divided by volume = 150 ÷ 50 = 3 grams per cubic centimetre.
Question 17 (Mathayom 2 · speed). A toy car travels 240 metres in 40 seconds. What is its average speed?
A. 6 m/s | B. 60 m/s | C. 200 m/s | D. 9,600 m/s
Answer: A — 6 m/s. Average speed = total distance / total time = 240 ÷ 40 = 6 metres per second.
English and careful reasoning
Question 18 (Primary 4 · English). Choose the grammatically correct sentence.
A. The students is reading. | B. The students are reading. | C. The student are read. | D. The students reads yesterday.
Answer: B — The students are reading.. The plural subject ‘students’ matches ‘are reading’ in the present continuous.
Question 19 (Mathayom 1 · English vocabulary). Which word is closest in meaning to ‘meticulous’?
A. Careless | B. Quick | C. Careful | D. Angry
Answer: C — Careful. Meticulous means careful and thorough, especially about details.
Question 20 (Mathayom 2 · reasoning). Find the next number: 1, 4, 10, 22, 46, __.
A. 80 | B. 88 | C. 92 | D. 94
Answer: D — 94. The rule is double the previous number and add two: 46×2 + 2 = 94.
A realistic four-week preparation routine
| Week | Learning focus | Home or classroom action |
|---|---|---|
| 1 — Choose the correct level | Read one IPST or school-approved topic and revise the underlying Maths or Science idea. | Use a sketch or a handful of counters to explain three examples. |
| 2 — Build deeper understanding | Use word problems, safe observations and discussion in a familiar language. | Compare two ways to reach an answer and decide which is easier to check. |
| 3 — Learn from practice | Attempt a short suitable question set or public sample page, untimed first. | Keep a small notebook of mistaken assumptions and corrected solutions. |
| 4 — Check readiness | Review the actual subject details; only consider timed practice when a child is comfortable with the concepts. | Teach one problem to someone else. If considering registration, check the six-part parent checklist. |
Preparing well does not require an exhausting schedule. Younger children may enjoy ten minutes of shape games, while senior secondary students may spend much longer on one challenging problem. Learning should leave room for curiosity, rest, reading and other schoolwork.
Useful Thailand-specific educational links
- Thailand IPST — official science, maths and technology teaching support.
- IPST SciMath — free Thai-language teaching and self-study resources.
- My IPST — materials searchable by school textbooks and grade.
- IPST Project 14 and educational e-services — lessons and teacher-guided activities.
- POSN Mathematical Olympiad programme — Thailand’s specialised training and selection route.
- POSN official examination archives — genuine higher-level Thai competition resources for suitable students.
- Thailand’s official IMO country profile — verified national-team record.
- SCO free study materials guide — chapter-wise lessons, linked videos and practice questions.
- SCO subjects and school-year information — independent learning route, not Thai ministry accreditation.
- Khan Academy Maths — complementary topic explanations when accessible.
Frequently asked questions from Thai families
What school grades are used in Thailand?
The usual basic school stages are Prathom 1–6 (primary, ป.1–ป.6) and Mathayom 1–6 (secondary, ม.1–ม.6). International schools may use different grade names. SCO’s Class 1–12 labels are not automatically one-to-one equivalents; compare actual topics.
Where can Thai families find trustworthy Maths and Science lessons?
Start with Thailand’s Institute for the Promotion of Teaching Science and Technology (IPST), particularly SciMath and My IPST. The platforms provide Thai-language lessons, videos, teacher materials and resources tied to learning standards. Some features may ask users to log in.
Is POSN the same as School Connect Olympiad?
No. Thailand’s POSN Foundation organises specialised national academic Olympiad training and selection pathways, with regional or Bangkok centres and further stages. SCO is a separate independent school-level provider.
Can a Primary 2 child join Thailand’s official IMO team through SCO?
No. The official International Mathematical Olympiad uses selected national teams. A younger child can practise appropriate Maths puzzles but does not enter the national IMO team by paying a separate online school-competition fee.
Did Thailand win medals at the 2026 official IMO?
Yes. Official IMO records show Thailand ranked 30th in 2026 and earned one gold, one silver and four bronze medals. Those awards belong to selected team contestants, not all learners participating in independent Maths practice.
Are the POSN July/August dates guaranteed for the next cycle?
POSN’s programme overview describes a usual application period around July and selection examinations around August, but it is not an individual 2027 registration confirmation. Ask a current local POSN centre for its latest subject-specific invitation.
Which SCO lessons, videos and questions are free?
School Connect Olympiad provides free chapter-wise learning materials, linked educational videos and practice questions. The learning resources are continually updated and improved. If a timed online mock or competition report is offered separately, check its current availability in the actual student account.
What is the SCO fee for a child in Thailand?
The live SCO registration catalogue currently lists Maths and Science entries at ₹200 or US$12, but this does not establish an exact Thai-baht checkout total, currency conversion, payment processing, or eligibility for every local school. Verify the actual checkout first.
Can a Thailand-based international-school learner register for SCO?
Possibly, subject to SCO’s current country, age, curriculum, mode, language and payment requirements. A globally accessible registration page is not proof that a particular learner or school has a confirmed seat.
Are SCO 2026–27 dates confirmed in Thailand’s local time?
The SCO portal publishes general 2026–27 cycle dates, but the public calendar alone does not establish a confirmed student slot, Thailand-local start time or local examination centre. Follow the student or school confirmation.
Can we use Thai when practising for an English-language competition?
Yes, discussing a Maths or Science idea in Thai may help a child understand it. But the actual examination language, translations and allowed assistance must be verified with its organiser. Do not assume bilingual exam delivery.
Are these questions taken from official Thailand POSN or IMO exams?
No. The twenty questions in this article are newly written educational examples labelled by approximate level. They are not POSN, official IMO, SCO, or Thai national examination papers.
Begin with curiosity and make an informed choice
Thailand offers trusted Maths and Science learning through IPST and an established pathway for advanced Olympiad students through POSN. A learner can also enjoy supplementary challenge questions through independent resources. Begin with the right school level, practise one idea well and ask for a clear explanation before joining a timed event. Families who are interested in School Connect can review the SCO subject pages and read the current application terms, rather than assuming that an award, price or seat is guaranteed. The twenty worked examples above are available to practise without registering.
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