Greek Primary Grade 4 / Primary Science / Physics foundations / Θερμότητα και καταστάσεις
Αλλαγές κατάστασης: structured theory, worked examples, answered practice, and a mastery checklist for Greek Primary Grade 4.
Розділ
Ключові ідеї глави у зрозумілій послідовності перед практикою.
Choose the body or system, define a positive direction, and mark every force or motion quantity before writing an equation.
A free-body or motion diagram comes before the law. Use resultant force to connect interaction and acceleration.
Vector quantities depend on direction. Keep signs consistent and check that the final unit matches the requested quantity.
For “τήξη”, start from an observation or model, define quantities and units where relevant, and separate the changed factor from the measured outcome. Support the conclusion with data and state the test's limitations.
For “πήξη”, start from an observation or model, define quantities and units where relevant, and separate the changed factor from the measured outcome. Support the conclusion with data and state the test's limitations.
For “εξάτμιση”, start from an observation or model, define quantities and units where relevant, and separate the changed factor from the measured outcome. Support the conclusion with data and state the test's limitations.
For “συμπύκνωση”, start from an observation or model, define quantities and units where relevant, and separate the changed factor from the measured outcome. Support the conclusion with data and state the test's limitations.
Primary Science / Physics foundations
Дотримуйтесь методу крок за кроком і перевіряйте обґрунтування.
In a safe test about “τήξη”, the first condition gives 14 units and the second 11. Which is greater, and what should be kept the same?
The first value is greater by 3 units. A fair test changes only one factor.
Explain “τήξη” in your own words and use a picture, objects, a table, or a simple measurement to support it.
A complete explanation connects the correct idea, a clear representation, and a sensible check.
Αλλαγές κατάστασης
Вісім завдань від базових навичок до екзаменаційного рівня. Спочатку виконайте самостійно.
Record 9 safe observations about “τήξη” without writing a conclusion yet.
An observation is something seen, heard, or measured.
The response needs 9 specific observable or measurable statements, not guesses about cause.
Design a fair test for “πήξη”: what changes, what is measured, and which 4 things stay the same?
Change one factor only.
Full response: one changed factor, one measurable outcome, and 4 controlled conditions.
Measurements are 8, 6, and 14 units. Put them in a table, find the greatest, and the difference from the least.
Use condition and measurement headings.
Greatest 14, least 6, difference 8 units.
Sort examples of “συμπύκνωση” into two groups and state the sorting rule.
Each item should clearly match one group.
A full response gives two named groups, at least two examples in each, and an observable sorting rule.
Choose a suitable tool and unit to measure something connected with “τήξη”.
Decide whether you measure length, time, mass, temperature, or volume.
The quantity, instrument, and unit must match, e.g. time-stopwatch-s or length-ruler-cm.
From data 3, 5, 7, predict the next value and explain the pattern.
Look for the constant change +2.
9; +2.
Write 4 safety rules for a simple activity about “εξάτμιση” and explain the risk each reduces.
Link each rule to a reason.
A full response gives 4 specific rules, each linked to a risk, and requires supervision where appropriate.
Data A=9 and B=15. Write a conclusion, evidence, and one limitation about “συμπύκνωση”.
Do not claim more than the two values show.
B is 6 greater than A. The values support this, but two measurements alone do not prove a general rule.
Αλλαγές κατάστασης
Шість різних завдань від базового рівня до складного з часом, підказками та відповідями.
Homework 1: Record 5 safe observations about “τήξη” without writing a conclusion yet.
An observation is something seen, heard, or measured.
The response needs 5 specific observable or measurable statements, not guesses about cause.
Homework 2: Design a fair test for “πήξη”: what changes, what is measured, and which 5 things stay the same?
Change one factor only.
Full response: one changed factor, one measurable outcome, and 5 controlled conditions.
Homework 3: Measurements are 4, 2, and 6 units. Put them in a table, find the greatest, and the difference from the least.
Use condition and measurement headings.
Greatest 6, least 2, difference 4 units.
Homework 4: Sort examples of “συμπύκνωση” into two groups and state the sorting rule.
Each item should clearly match one group.
A full response gives two named groups, at least two examples in each, and an observable sorting rule.
Homework 5: Choose a suitable tool and unit to measure something connected with “τήξη”.
Decide whether you measure length, time, mass, temperature, or volume.
The quantity, instrument, and unit must match, e.g. time-stopwatch-s or length-ruler-cm.
Homework 6: From data 6, 9, 12, predict the next value and explain the pattern.
Look for the constant change +3.
15; +3.
35 хвилин / 30 балів
Повний тест із таймером, балами та зразками відповідей.
Start the timer when ready, work without notes, show every step, and open model answers only after finishing.
1. Record 3 safe observations about “τήξη” without writing a conclusion yet.
2 балівThe response needs 3 specific observable or measurable statements, not guesses about cause.
2. Design a fair test for “πήξη”: what changes, what is measured, and which 5 things stay the same?
3 балівFull response: one changed factor, one measurable outcome, and 5 controlled conditions.
3. Measurements are 9, 2, and 11 units. Put them in a table, find the greatest, and the difference from the least.
3 балівGreatest 11, least 2, difference 9 units.
4. Sort examples of “συμπύκνωση” into two groups and state the sorting rule.
4 балівA full response gives two named groups, at least two examples in each, and an observable sorting rule.
5. Choose a suitable tool and unit to measure something connected with “τήξη”.
4 балівThe quantity, instrument, and unit must match, e.g. time-stopwatch-s or length-ruler-cm.
6. From data 4, 7, 10, predict the next value and explain the pattern.
4 балів13; +3.
7. Write 5 safety rules for a simple activity about “εξάτμιση” and explain the risk each reduces.
5 балівA full response gives 5 specific rules, each linked to a risk, and requires supervision where appropriate.
8. Data A=3 and B=5. Write a conclusion, evidence, and one limitation about “συμπύκνωση”.
5 балівB is 2 greater than A. The values support this, but two measurements alone do not prove a general rule.
Розділ
Джерела програми; порядок тем уточнюйте у школі та викладача.
Primary Science / Physics foundations
Greek Primary Grade 4: структурований маршрут з математики та фізики з розділами, практикою і наступними кроками.
Структура відповідає підручнику й допомагає організувати вивчення теми.
Теми, де найчастіше виникають помилки або потрібна додаткова практика.
З чого почати: підручник, daily material, PDFs, videos і worked examples.
Цільова практика перед full tests, щоб coverage було зрозумілим.
Як вимірювати прогрес у главі і коли додавати її до загального mock.
Що робити після глави і як вона пов'язана з наступним розділом.
Примітка: офіційну екзаменаційну програму кожного року завжди уточнюйте у школі, викладача та за поточними офіційними джерелами.
