中文（繁體）
中文（简体）
English
Primary General Studies: Puberty and Wellbeing (Paper 3 (challenge))
Primary General Studies: Puberty and Wellbeing (Paper 3 (challenge))
Paper three adds three concept items on the endocrine system, cyberbullying and bodily autonomy, then six calculations on yearly sleep hours and days, body mass index, energy burn share, height increase, yearly exercise hours and a check against the recommended range, all requiring a written formula.
Direct answers Write the formula, substitute, then check the unit; that way calculations never rely on memory alone.
01 Paper details (check answers afterwards)
| Item | Detail |
|---|---|
| Questions | 10 |
| Suggested time | 20 |
| Difficulty mix | Foundation 3 · Intermediate 3 · Challenge 3 · Error redo 1 |
| Chapter | Chapter: Primary General Studies: Puberty and Wellbeing |
| Level | parts of a closed circuit, conductors against insulators, series against parallel, adding up battery voltage, and electrical safety |
02 Questions (10 items)
- FoundationWhich system drives the hormone changes of puberty?
- FoundationIf classmates keep mocking you online, what should you do?
- FoundationWhat is bodily autonomy?
- IntermediateSleeping 8 hours a night for 365 days, how many hours and about how many days is that?
- IntermediateWeighing 45 kg at 1.5 m tall, what is the body mass index?
- IntermediateTaking in 2000 kilocalories a day and burning 300 through exercise, what percentage is burned?
- ChallengeHeight rises from 140 cm to 158 cm. What is the percentage increase?
- ChallengeExercising 7 hours a week for 52 weeks gives how many hours?
- ChallengeIs 9 hours of sleep within the recommended 8 to 10 hours?
- Error redoShould a teenager crash-diet to lose weight fast?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | The endocrine system, through the hormones it releases. | Hormones travel in the blood, so their effects reach the whole body. |
| 2 | Keep screenshots as evidence and tell a parent or teacher. | Cyberbullying needs a record; do not deal with it alone. |
| 3 | Everyone has the right to refuse physical contact that makes them uneasy. | Refuse at once and tell a trusted adult. |
| 4 | 2920 hours, about 121.7 days. | 8 times 365 is 2920, and that over 24 is 121.7 days. |
| 5 | The index is 20.0. | 45 divided by 1.5 squared is 20.0. |
| 6 | About 15.0 per cent. | 300 over 2000 times 100 is 15.0. |
| 7 | About 12.9 per cent. | 158 minus 140 is 18, and 18 over 140 times 100 is about 12.9. |
| 8 | 364 hours. | 7 times 52 is 364 hours. |
| 9 | Yes, 9 lies between 8 and 10. | Compare the three numbers: 9 is not below 8 and not above 10. |
| 10 | No. Growing bodies need balanced nutrition for height and development. | Crash dieting harms growth, concentration and mood. |
04 What to do after marking
- After marking, redo only the wrong items and write down which step went wrong (formula, unit, or misread number).
- Repeat the same item two days later; move to the next paper only when both attempts are correct.
- Parents only need the answer and note columns; there is no need to explain every item.
Paper four clears the conductor, insulator and battery direction misconceptions.Tutor Registration →
Questions and answers are written originally by the TutorZone team and are not taken from any school, publisher or examination authority paper. Every value is checked by computer.