Цілі навчання
- Recognise, explain, and apply “κοινά πολλαπλάσια”.
- Recognise, explain, and apply “αριθμογραμμή”.
- Recognise, explain, and apply “απλοποίηση”.
Greek Primary Grade 4 / Mathematics / Κλάσματα και δεκαδικοί
Ισοδυναμία και σύγκριση κλασμάτων: structured theory, worked examples, answered practice, and a mastery checklist for Greek Primary Grade 4.
Розділ
Ключові ідеї глави у зрозумілій послідовності перед практикою.
Write the number in a useful form, check sign and place value, and only then choose the operation. A clear representation reduces mechanical errors.
Fractions, decimals, percentages, ratios, and powers can describe the same quantity. Changing form is a solving tool, not a separate trick.
Estimate before and after the exact calculation. The sign, order of magnitude, and unit must agree with the problem context.
Use a suitable representation, state the rule, and keep every numerical or algebraic step equivalent. Finish with estimation, an inverse operation, or substitution as a check.
Use a suitable representation, state the rule, and keep every numerical or algebraic step equivalent. Finish with estimation, an inverse operation, or substitution as a check.
Use a suitable representation, state the rule, and keep every numerical or algebraic step equivalent. Finish with estimation, an inverse operation, or substitution as a check.
Mathematics
Дотримуйтесь методу крок за кроком і перевіряйте обґрунтування.
5 equal groups contain 7 objects each. How many objects are there, and how can the answer be checked?
35
Explain “κοινά πολλαπλάσια” 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.
Ισοδυναμία και σύγκριση κλασμάτων
Вісім завдань від базових навичок до екзаменаційного рівня. Спочатку виконайте самостійно.
Calculate 4 + 5 and show two representations connected with “κοινά πολλαπλάσια”.
Use a number line, place value, or objects.
4 + 5 = 9. Valid representations include number-line jumps and grouped objects.
2 equal groups contain 7 objects each. Find the total and write an addition and multiplication statement.
Add 7 a total of 2 times.
7 + 7 = 2 · 7 = 14.
Continue 3, 7, 11, ... for three more terms and explain the rule.
Check how much each term increases.
15, 19, 23; +4.
A rectangle has sides 6 cm and 6 cm. Find its perimeter and explain why four sides are counted.
Opposite sides are equal.
Perimeter = 6 + 6 + 6 + 6 = 24 cm.
Out of 27 objects, 9 are shaded. What fraction is shaded and how does it simplify?
Put shaded objects over the total.
9/27 = 1/3.
The measurements are 5, 5, 5, and 5. Find the greatest, least, and range.
Range = greatest value minus least value.
Greatest 5, least 5, range 0.
Anna has 16 cards, gives away 8, then shares the rest into 1 equal groups. How many are in each group?
Subtract first, then divide.
16 - 8 = 8; (8) : 1 = 8.
A learner says 4 + 4 = 9. Find the error, correct it, and check the correction.
Check with a number line or inverse subtraction.
4 + 4 = 8; 8 - 4 = 4.
Ισοδυναμία και σύγκριση κλασμάτων
Шість різних завдань від базового рівня до складного з часом, підказками та відповідями.
Homework 1: Calculate 7 + 6 and show two representations connected with “κοινά πολλαπλάσια”.
Use a number line, place value, or objects.
7 + 6 = 13. Valid representations include number-line jumps and grouped objects.
Homework 2: 3 equal groups contain 3 objects each. Find the total and write an addition and multiplication statement.
Add 3 a total of 3 times.
3 + 3 + 3 = 3 · 3 = 9.
Homework 3: Continue 6, 11, 16, ... for three more terms and explain the rule.
Check how much each term increases.
21, 26, 31; +5.
Homework 4: A rectangle has sides 9 cm and 2 cm. Find its perimeter and explain why four sides are counted.
Opposite sides are equal.
Perimeter = 9 + 2 + 9 + 2 = 22 cm.
Homework 5: Out of 20 objects, 5 are shaded. What fraction is shaded and how does it simplify?
Put shaded objects over the total.
5/20 = 1/4.
Homework 6: The measurements are 8, 6, 8, and 6. Find the greatest, least, and range.
Range = greatest value minus least value.
Greatest 8, least 6, range 2.
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. Calculate 5 + 6 and show two representations connected with “κοινά πολλαπλάσια”.
2 балів5 + 6 = 11. Valid representations include number-line jumps and grouped objects.
2. 3 equal groups contain 8 objects each. Find the total and write an addition and multiplication statement.
3 балів8 + 8 + 8 = 3 · 8 = 24.
3. Continue 4, 9, 14, ... for three more terms and explain the rule.
3 балів19, 24, 29; +5.
4. A rectangle has sides 7 cm and 2 cm. Find its perimeter and explain why four sides are counted.
4 балівPerimeter = 7 + 2 + 7 + 2 = 18 cm.
5. Out of 12 objects, 3 are shaded. What fraction is shaded and how does it simplify?
4 балів3/12 = 1/4.
6. The measurements are 6, 6, 6, and 6. Find the greatest, least, and range.
4 балівGreatest 6, least 6, range 0.
7. Anna has 27 cards, gives away 9, then shares the rest into 2 equal groups. How many are in each group?
5 балів27 - 9 = 18; (18) : 2 = 9.
8. A learner says 5 + 5 = 11. Find the error, correct it, and check the correction.
5 балів5 + 5 = 10; 10 - 5 = 5.
Розділ
Джерела програми; порядок тем уточнюйте у школі та викладача.
Mathematics
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.