Greece has a living tradition of Mathematics and scientific inquiry, and students can explore challenging ideas in many different ways. A primary learner might enjoy shape puzzles and measurements in euros, a Gymnasio pupil may solve an algebra pattern, and a Lykeio student may prepare for demanding proof-based problems. This guide helps families distinguish Greece’s genuine national Maths competitions, the official International Mathematical Olympiad national-team route and youth scientific research opportunities from independent School Connect Olympiad (SCO) learning. It also includes 20 original worked questions, official Greek education links and relevant School Connect-owned Maths and Science 2026 PDF resource pages. SCO’s chapter-wise learning materials, linked educational videos and practice questions are free and continually improved.
What is an Olympiad in Greece—and who actually organises it?
The word Olympiad is used by different organisations for different kinds of activities. The Hellenic Mathematical Society (Ελληνική Μαθηματική Εταιρεία) runs nationally recognised Mathematics competitions in Greece. The official International Mathematical Olympiad accepts selected national teams, not direct private online registration. Greece also has a government-organised youth Science project competition. SCO operates its own independent learning and Olympiad programme, and its questions are not official Greek Maths team-selection papers.
| Programme | Who should explore it | Who controls entry and results |
|---|---|---|
| Thales, Euclid and Archimedes national Maths pathway | Eligible school pupils under current Hellenic Mathematical Society rules. | Hellenic Mathematical Society, with school notices and staged competitions. |
| Mikros Eukleidis / Little Euclid | Younger primary learners; 2025–26 archives show Grade 5 and 6 problem sets. | Hellenic Mathematical Society publishes the specific yearly notice. |
| Official International Mathematical Olympiad (IMO) | Highly prepared students eventually selected to represent Greece. | National organisers select the official team; the IMO records results. |
| National Competition for Young Scientists | Young researchers aged 14–20 with original Science projects. | Greek government competition selecting a delegation to the EU young scientists event. |
| School Connect Olympiad (SCO) | Families wanting free class-wise Maths, Science and English study plus optional separate SCO exams. | SCO is an independent provider, not a Greek national qualification route. |
Thales 2026: a current date from the Greek Maths organiser
The Hellenic Mathematical Society has announced the 87th national student Mathematics competition, Thales (Ο Θαλής), for Friday 6 November 2026. Its notice lists 4 November 2026 as the school participation form deadline. The announcement is intended for education departments, Gymnasio and Lykeio school leaders and teachers, so a family should first ask the student’s own school about applicable grade criteria and how the current entry procedure works. Follow HMS current announcements and the official competitions archive rather than a general SCO registration page.
The archived 2025–26 HMS sequence lists Thales on 7 November 2025, Euclid on 17 January 2026 and Archimedes on 28 February 2026. Those dates describe the previous school-year competition sequence; they do not confirm exact Euclid or Archimedes dates for 2026–27. The HMS archive also includes papers and solutions, including Little Euclid papers for primary Grades 5 and 6. It is valuable for learning to read a real solution, but students should check eligibility with HMS.
The official IMO: Greece has its own selected Mathematics team
Greece’s official International Mathematical Olympiad country profile records its participation since 1975 and a national team that has earned medals in real international competition. For example, the official 2026 results record one silver, two bronze medals and two honourable mentions for Greece’s team. This is the actual national-team IMO. It is not the same contest as an independent SCO event sometimes described with an English-language ‘International Maths Olympiad’ title.
A student interested in that advanced pathway should study number theory, geometry, algebra, combinatorics and writing complete proofs. The official IMO problem archive is authentic, but many problems are far beyond ordinary primary or early secondary schoolwork. Starting with school foundations and following the Greek organiser’s selection notices is more useful than expecting that solving a private online sample paper grants team entry.
A different opportunity: Greece’s young Science researchers
The Greek government runs a National Competition for Young Scientists for people aged 14–20. Participants may submit original research individually or in groups of up to three, across fields including Physics, Biology, Chemistry, Mathematics, Engineering and Environmental Science. A selected delegation can represent Greece at the European Union Contest for Young Scientists (EUCYS). It is research-project based, not a multiple-choice primary-school test, and its eligibility and deadlines must be checked against the latest official call.
Greece’s school stages: choose learning materials by age
Greek schooling generally uses Dimotiko (Δημοτικό), six years of primary school; Gymnasio (Γυμνάσιο), three years of lower secondary; and Lykeio (Λύκειο), three years of upper secondary. The Greek Ministry of Education governs the school system and the Institute of Educational Policy (IEP) develops curriculum and educational-material guidance. Greece’s textbook registry helps locate education texts by school type, grade and subject.
| Greek school stage | Approximate learning focus | Sample challenge in this guide |
|---|---|---|
| Dimotiko Years 1–3 | Arithmetic, simple measurements, reading, plants and the natural world. | Add counters, multiply groups and identify plant roots. |
| Dimotiko Years 4–6 | Decimals, fractions, time, geometry and experiments. | Spend euros, calculate a ferry arrival time, test a fair experiment. |
| Gymnasio Years 1–3 | Equations, sequences, graphs, introductory Physics and Science reasoning. | Solve 3x + 7 = 25 or calculate average speed. |
| Lykeio Years 1–3 | More advanced algebra, geometry, Chemistry and evidence-based science. | Use a system of equations, understand polygon turns or calculate moles. |
The ‘Class 4’ label in an SCO PDF is a broad international learning category. It should not be described as a Ministry-approved Greek Dimotiko textbook, a Greek-language national examination or a guaranteed exact Greek curriculum match. Match the topic to the actual school syllabus and the child’s language comfort.
Use School Connect’s own 2026 Maths and Science PDF resources
SCO’s own PDF library can support useful, free independent practice alongside school materials. The recommended study order is syllabus → free chapter lesson or video → sample paper → answer key → correction notebook. The following are verified public SCO 2026 resource pages. Their underlying PDF files and complete question-by-question contents have not all been independently opened and checked, so these are described as resource links rather than authenticated Greek past papers.
| SCO-owned resource | Use for learning | Open resource |
|---|---|---|
| Class 4 Maths syllabus (2026) | Choose age-appropriate number, measurement and geometry topics. | Maths syllabus PDF page |
| Class 4 Maths Sample Paper 1 (2026) | Extra practice after the free chapter lessons. | Maths sample-paper page |
| Class 4 Maths Answer Key 1 (2026) | Check sample answers only after solving independently. | Maths answer-key PDF page |
| Class 4 Science syllabus (2026) | Prepare topics in plants, matter, energy and observation. | Science syllabus PDF page |
| Class 4 Science Sample Paper 1 (2026) | Class-level Science concept and reasoning exercises. | Science sample-paper page |
| Class 4 Science Answer Key 1 (2026) | Review incorrect reasoning after a sample attempt. | Science answer-key PDF page |
| Free SCO Class 4 Maths lessons | Chapter-wise materials, linked videos and practice questions. | Class 4 Maths learning hub |
| Free SCO Class 4 Science lessons | Find matching Science chapter practice and videos. | Class 4 Science learning hub |
A PDF’s landing-page year is not proof that the file was a real administered Olympiad paper in that year. SCO’s resources are independent educational materials and must not be represented as official HMS, Greek Ministry or international national-team exam papers. Teachers should open each actual PDF, check its grade, version and answer explanations, and use it only when suitable.
Five Greece-relevant learning activities
1. Plan a pretend bookshop visit in euros
Imagine buying a book for €7.50 and a notebook for €2.30. Add carefully to get €9.80. The exercise strengthens decimal place value and real-life arithmetic without needing to shop.
Try it: Invent two more prices and calculate the exact total and change from €20.
2. Solve a ferry timetable puzzle
A ferry begins at 10:40 and takes one hour and thirty-five minutes. Draw a number line from 10:40 to 11:40 and then to 12:15. Explain why adding in stages is more reliable than guessing.
Try it: Change the journey duration to one hour forty-five minutes and work out the new arrival time.
3. Try a simple fair-plant investigation
Grow two similar seeds in comparable soil and water them equally. Choose one condition to change, such as light, and ask what you predict. Record observations safely and avoid concluding anything from a single day.
Try it: Write one prediction, the changed variable and two things kept alike.
4. Study a real Greek competition solution
Visit the Hellenic Mathematical Society competition archive with a teacher. Choose an age-suitable problem and compare a student’s written explanation with an official solution. A short proof and a calculation are not always the same.
Try it: Identify the key idea in the official solution without copying it word for word.
5. Make an errors-and-explanations notebook
After an SCO class-wise sample question, label the error: wrong operation, forgotten unit, misread condition or unclear explanation. Revisit the topic in a free linked chapter lesson, then solve a fresh example.
Try it: Correct a measurement mistake and explain why units matter.
20 original Maths, Science and reasoning questions for Greek school stages
These questions are original classroom learning examples, not actual Greek Thales, Euclid, Archimedes, IMO or EUCYS questions. They cover a range of ability from primary school to upper secondary; teachers should choose only those appropriate to the learner. The Greek place names and euro examples are contexts for learning, not claims of official Greek curriculum approval.
Question 1 (Dimotiko 2 · Maths). A class has 23 blue counters and 18 green counters. How many are there altogether?
A. 41 | B. 31 | C. 35 | D. 51
Answer: A — 41. Add the tens and ones: 23 + 18 = 41. Count the groups again to check your answer.
Question 2 (Dimotiko 3 · Maths). Four bags contain seven oranges each. How many oranges are there?
A. 11 | B. 28 | C. 24 | D. 32
Answer: B — 28. Four equal groups of seven make 4 × 7 = 28 oranges. Multiplication is faster than counting every orange.
Question 3 (Dimotiko 4 · Maths). A family buys a book for €7.50 and a notebook for €2.30. What is the total?
A. €8.80 | B. €9.30 | C. €9.80 | D. €10.80
Answer: C — €9.80. Add the euro amounts: 7.50 + 2.30 = 9.80. The decimal places stay aligned.
Question 4 (Dimotiko 4 · Maths). A ferry departs at 10:40 and arrives 1 hour 35 minutes later. What time is arrival?
A. 11:15 | B. 11:45 | C. 12:05 | D. 12:15
Answer: D — 12:15. Add one hour to reach 11:40, then 20 minutes to 12:00 and another 15 minutes to 12:15.
Question 5 (Dimotiko 5 · Maths). What is three quarters of 48?
A. 36 | B. 12 | C. 24 | D. 40
Answer: A — 36. One quarter of 48 is 12. Three quarters are 3 × 12 = 36.
Question 6 (Dimotiko 6 · Maths). A rectangle is 9 cm long and 4 cm wide. What is its perimeter?
A. 36 cm | B. 26 cm | C. 13 cm | D. 18 cm
Answer: B — 26 cm. Perimeter is the distance around all four sides: 9 + 4 + 9 + 4 = 26 centimetres.
Question 7 (Gymnasio 1 · Maths). Solve 3x + 7 = 25.
A. 8 | B. 5 | C. 6 | D. 9
Answer: C — 6. Subtract seven from both sides to get 3x = 18. Divide by three: x = 6.
Question 8 (Gymnasio 2 · Maths). The sequence 4, 7, 10, 13 increases by 3. What is its tenth term?
A. 27 | B. 28 | C. 30 | D. 31
Answer: D — 31. The first term is 4. The tenth term is 4 + 9 × 3 = 31 because nine steps separate terms one and ten.
Question 9 (Lykeio · Maths). Two positive integers sum to 15 and their difference is 3. What is the larger integer?
A. 9 | B. 6 | C. 12 | D. 8
Answer: A — 9. Let the larger number be x and the smaller y. x + y = 15 and x − y = 3. Add equations to get 2x = 18, so x = 9.
Question 10 (Lykeio · Maths). The exterior angles of a convex polygon add up to how many degrees, taking one at each vertex?
A. 180° | B. 360° | C. 540° | D. 720°
Answer: B — 360°. Walk once around the polygon: the total turning angle is one full turn, which equals 360 degrees.
Natural Sciences and observation
Question 11 (Dimotiko 3 · Science). What part of a plant usually absorbs water from the soil?
A. Petal | B. Fruit | C. Roots | D. Flower
Answer: C — Roots. The roots take up water and minerals and help anchor the plant in the soil.
Question 12 (Dimotiko 4 · Science). When water vapour cools into small liquid droplets, what process occurs?
A. Melting | B. Freezing | C. Evaporation | D. Condensation
Answer: D — Condensation. Condensation changes a gas into a liquid. It can happen when moist air touches a cooler surface.
Question 13 (Dimotiko 5 · Science). Which object makes a shadow when it blocks sunlight?
A. An opaque book | B. Clear air | C. A beam of light itself | D. An invisible sound
Answer: A — An opaque book. An opaque object blocks light and can form a shadow behind it.
Question 14 (Dimotiko 6 · Science). For a fair plant-growth comparison, what should be kept similar if only light changes?
A. The colour of notebooks | B. Seed type, water and soil | C. Every plant’s location and water should differ | D. The final answer
Answer: B — Seed type, water and soil. Change only the light level as much as possible. Keep seed type, water and soil similar to isolate its effect.
Question 15 (Gymnasio 1 · Science). An object travels 120 metres in 30 seconds. What is its average speed?
A. 2 m/s | B. 3 m/s | C. 4 m/s | D. 6 m/s
Answer: C — 4 m/s. Average speed equals total distance divided by time: 120 ÷ 30 = 4 metres per second.
Question 16 (Gymnasio 2 · Science). Which type of energy change mainly occurs when a battery-powered lamp glows?
A. Sound into soil | B. Water into wind | C. Light into chemical energy | D. Chemical energy into electrical and light energy
Answer: D — Chemical energy into electrical and light energy. The battery stores chemical energy, which is transferred electrically and becomes light and heat in the lamp.
Question 17 (Lykeio · Chemistry). How many moles are in 36 g of water, using molar mass 18 g/mol?
A. 2 mol | B. 18 mol | C. 0.5 mol | D. 36 mol
Answer: A — 2 mol. The amount in moles is mass divided by molar mass: 36 ÷ 18 = 2 mol.
English vocabulary, data and reasoning
Question 18 (Dimotiko 5 · English). Choose the word opposite to ‘ancient’.
A. Historic | B. Modern | C. Old | D. Past
Answer: B — Modern. Modern describes something belonging to recent or present times, the opposite of ancient.
Question 19 (Gymnasio 1 · Reasoning). What comes next in the pattern 2, 5, 11, 23, …?
A. 35 | B. 45 | C. 47 | D. 49
Answer: C — 47. Each number is double the previous number plus one: 2→5→11→23. Therefore 23 × 2 + 1 = 47.
Question 20 (Gymnasio 2 · Data). A chart shows 15, 20, and 25 visitors on three days. What is the average number of visitors?
A. 15 | B. 25 | C. 30 | D. 20
Answer: D — 20. Sum the daily counts: 15 + 20 + 25 = 60. Divide by three days to find an average of 20 visitors.
Four-week learning routine for Greece-based families
| Week | Focus | Useful activity |
|---|---|---|
| 1 | Read the school textbook and practise foundations. | Ask the teacher which Dimotiko, Gymnasio or Lykeio topic needs attention. Find a suitable SCO free lesson or learning video. |
| 2 | Apply Maths and Science ideas. | Use euro totals, ferry times, plant observations or units and solve a few new questions. |
| 3 | Explore the genuine organiser’s papers. | For eligible learners, read age-suitable HMS archived questions and solutions. Advanced learners can look at official IMO material with guidance. |
| 4 | Correct errors and verify future event dates. | Write a short correction notebook, attempt fresh practice and check the next notice from the relevant Greek organiser. |
There is no obligation to compete. A student who can explain a fraction, ask a clear scientific question or correct an algebra mistake has made meaningful progress. Short, regular learning sessions may be especially helpful for younger students.
Official Greek education and competition sources
- Hellenic Mathematical Society official announcements — current Thales participation instructions and national Maths updates.
- Hellenic Mathematical Society competitions archive — past Thales, Euclid, Archimedes and Little Euclid papers and solutions.
- Greece’s official International Mathematical Olympiad profile — verified national-team history and recorded results.
- Official IMO Mathematics problems — authentic advanced team-level questions.
- Greek government Young Scientists competition — the 14–20 original research-project route.
- Greek Ministry of Education — official school-year and educational guidance.
- Institute of Educational Policy curriculum unit — Greek primary and secondary curricula.
- Greek school textbook registry — search materials by Greek grade and subject.
- School Connect free learning subjects — independent chapter-wise learning, videos and practice.
SCO learning is free; any exam entry is separate
School Connect Olympiad’s chapter-wise learning materials, linked educational videos and practice questions are free and continually improved. Its separate online subject-exam catalogue has its own rules, dates and fees. The SCO WINTER 2027 calendar currently lists general Maths and Science dates in November and December 2026, but the display is not confirmation that a specific student in Greece is eligible, can access a slot or has been registered. Grade, country, delivery, exam language, time zone, checkout and final confirmation must be checked.
The earlier Greece article promised automatic international access, global certificates, scholarships, personalised webinars and freely available unlimited mock tests without sufficient verification. This guide does not repeat those claims. SCO exams and Greek national selections are independent; participating in one does not create eligibility for the other.
Frequently asked questions about Olympiad exams in Greece
Who organises Greece’s national Mathematics competitions?
The Hellenic Mathematical Society (Ελληνική Μαθηματική Εταιρεία, EME) organises the Thales, Euclid and Archimedes competitions and publishes its own rules, papers and outcomes. SCO is not the national organiser.
What is the next announced Thales exam date in 2026?
The Hellenic Mathematical Society announced its 87th Thales competition for Friday 6 November 2026 with a school participation form deadline of 4 November 2026. Students should ask their own school about the organiser’s applicable participation conditions.
Can a primary-school child directly enter the senior Thales and Archimedes sequence?
Do not assume so. HMS competitions have their own grade and school routes. Its Mikros Eukleidis (Little Euclid) section has documented Grade 5 and 6 papers. Teachers should check each competition’s specific current notice.
How does a Greek learner join the official International Mathematical Olympiad?
The official International Mathematical Olympiad uses selected national teams. Greece’s team is listed in its official country record, but joining an independent SCO Maths exam is not the same as being selected for the Greek team.
What Science research opportunity exists for older Greek students?
The Greek government’s National Competition for Young Scientists invites original individual or up-to-three-person projects for young people aged 14–20 and can select Greece’s delegation to the EU Contest for Young Scientists. It is a project contest, not a school-level SCO exam.
What does Dimotiko, Gymnasio and Lykeio mean?
Dimotiko is six years of primary school, Gymnasio is generally three years of lower secondary education, and Lykeio is three years of upper secondary school. Check a child’s actual enrolled year rather than assuming Indian Class numbers are automatically equivalent.
Are SCO chapter-wise materials, videos and practice questions really free?
Yes. SCO provides free chapter-wise learning materials, linked educational videos and practice questions and continues to update them. No old monthly learning subscription should be purchased to use these core resources.
Which SCO PDFs should a family in Greece use?
Select an age-appropriate SCO 2026 syllabus, then its matching Maths or Science sample-paper resource page and answer-key page. For example, this article links Class 4 Maths and Science PDFs as independent English-language supplementary exercises, not Greek national competition papers.
Are these SCO 2026 PDFs genuine Greek Olympiad papers?
No. The resource pages are produced by School Connect for its own independent Olympiad learning. We have not authenticated their downloadable file binaries as exams administered by Greek organisers or as papers from a particular Greek school year.
Can students living in Greece automatically book an SCO online Olympiad exam?
The SCO calendar lists general Maths and Science subject dates, but it does not by itself confirm whether a particular student in Greece can register, pay, meet grade eligibility or use a preferred time slot. Families should verify country availability and the actual confirmation.
Do practice marks guarantee a national medal, scholarship or university admission?
No. A child’s performance on the original learning exercises here is not an official exam result. The Greek organisers and the official International Mathematical Olympiad have independent results and award rules.
Are the twenty Maths and Science questions on this article official Greek exam questions?
No. They are original educational questions with worked explanations, grouped by broad Greek school stages. They are not copied from HMS, the Greek government competition, the International Mathematical Olympiad or an SCO test.
Start with a Greek school topic and one helpful question
For a child in Greece, a good start is a topic from their own schoolwork followed by an explanation they can understand. The free SCO Maths chapter videos and practice or Science learning chapters can provide additional English-language exercises, while the Greek textbook and teacher remain authoritative for local curriculum requirements. If a student wants to pursue Greece’s official Maths or young-scientist competitions, contact those organisers directly and check the current rules.
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