Primary 4 Science exam paper analysis: 2018
PaperLah has 34 Primary 4 Science exam papers from 2018, set by 15 Singapore primary schools, with 1,832 questions worth 2,433 marks. The topics carrying the most marks were Matter (16%), Light (13%) and Heat (12%); together the top 4 topics account for half of all marks. Matter appears in 94% of the papers. Multiple-choice questions make up 51% of marks, and 0.3% of questions are worth 3 marks or more, which usually means showing working. A typical paper has about 54 questions and 72 marks.
These figures describe the school papers in PaperLah's collection, not official MOE or SEAB weightings. They help with planning revision; they can't predict a particular exam.
Compared with all years: Matter took 16% of marks in 2018 (all years: 15%); Light took 13% of marks in 2018 (all years: 13%); Heat took 12% of marks in 2018 (all years: 13%).
Where the marks are
Topics ranked by their share of all marks. The blue ones above the line together make up half.
Show as table
| Topic | % of marks | Papers |
|---|---|---|
| Matter | 15.7 | in 32 of 34 papers |
| Light | 12.8 | in 27 of 34 papers |
| Heat | 11.5 | in 22 of 34 papers |
| Life cycles | 10.6 | in 29 of 34 papers |
| Magnets | 10 | in 30 of 34 papers |
| Materials | 7.7 | in 32 of 34 papers |
| Classification | 7.6 | in 31 of 34 papers |
| Plant parts and transport | 5.9 | in 30 of 34 papers |
| Digestive system | 4.6 | in 27 of 34 papers |
| Scientific investigation | 3.3 | in 28 of 34 papers |
| Living and non-living things | 2.8 | in 25 of 34 papers |
| Human body systems | 1.8 | in 19 of 34 papers |
| Fungi and bacteria | 1.5 | in 15 of 34 papers |
| Electricity | 1.2 | in 12 of 34 papers |
| Plant reproduction | 0.9 | in 10 of 34 papers |
| Changes of state and water cycle | 0.5 | in 5 of 34 papers |
| Environment and ecosystems | 0.3 | in 2 of 34 papers |
| Adaptations | 0.2 | in 4 of 34 papers |
| Forces | 0.2 | in 4 of 34 papers |
| Respiratory and circulatory systems | 0.2 | in 3 of 34 papers |
| Hatching eggs | 0.1 | in 1 of 34 papers |
| Reproduction in humans and animals | 0.1 | in 1 of 34 papers |
| 浮力 | 0.1 | in 1 of 34 papers |
| Food and feeding habits | 0.1 | in 1 of 34 papers |
| Water levels in connected containers | 0.1 | in 1 of 34 papers |
| Food preferences | 0 | in 1 of 34 papers |
| Transport of nutrients | 0 | in 1 of 34 papers |
| Mosquito prevention | 0 | in 1 of 34 papers |
What a paper is made of
How children answer, as a share of marks.
- Multiple choice 51%
- Open-ended (show working) 28%
- Short answer 12%
- Fill in the blank 3%
- Other 6%
Show as table
| Format | % of marks |
|---|---|
| Multiple choice | 50.6 |
| Open-ended (show working) | 28.2 |
| Short answer | 12.2 |
| Fill in the blank | 3.3 |
| Word bank | 1.9 |
| Drawing or labelling | 1.9 |
| Number answer | 1 |
| Other | 0.8 |
Marks per question
Share of questions worth 1, 2, 3, 4 or 5+ marks. 12% have no marks printed. Higher-mark questions usually need working.
Show as table
| Marks | % of questions |
|---|---|
| 1 | 42.7 |
| 2 | 44.9 |
| 3 | 0.3 |
How likely a topic comes up
The share of papers with at least one question on the topic.
Show as table
| Topic | % of papers |
|---|---|
| Matter | 94.1 |
| Materials | 94.1 |
| Classification | 91.2 |
| Magnets | 88.2 |
| Plant parts and transport | 88.2 |
| Life cycles | 85.3 |
| Scientific investigation | 82.4 |
| Light | 79.4 |
| Digestive system | 79.4 |
| Living and non-living things | 73.5 |
| Heat | 64.7 |
| Human body systems | 55.9 |
| Fungi and bacteria | 44.1 |
| Electricity | 35.3 |
| Plant reproduction | 29.4 |
| Changes of state and water cycle | 14.7 |
| Adaptations | 11.8 |
| Forces | 11.8 |
| Respiratory and circulatory systems | 8.8 |
| Environment and ecosystems | 5.9 |
| Hatching eggs | 2.9 |
| Food preferences | 2.9 |
| Reproduction in humans and animals | 2.9 |
| 浮力 | 2.9 |
| Food and feeding habits | 2.9 |
| Transport of nutrients | 2.9 |
| Water levels in connected containers | 2.9 |
| Mosquito prevention | 2.9 |
Exam types
Which school exams these papers come from.
Key facts
- 34 papers, 1,832 questions, 2,433 marks, from 15 schools.
- 4 topics carry half of all marks.
- Most-tested topic: Matter, 16% of marks.
- Most common topic across papers: Matter, in 94% of papers.
- 0.3% of questions are worth 3 marks or more.
- Exam types: End-of-Year / SA2, Mid-Year / SA1 and Weighted Assessment / CA.
Questions parents ask
What topics come up most in Primary 4 Science exam papers in 2018?
By share of marks, the most-tested topics were Matter (16%), Light (13%), Heat (12%), Life cycles (11%) and Magnets (10%).
How many questions and marks are in a Primary 4 Science paper?
A typical paper in this set has about 54 questions and 72 marks. Papers vary by school and by exam (weighted assessments are shorter than mid-year and end-of-year exams).
Which exams and schools are included?
34 papers from 15 schools, from these exam types: End-of-Year / SA2, Mid-Year / SA1 and Weighted Assessment / CA. The schools are listed further down this page.
Can I download these papers?
No. PaperLah doesn't share the papers as downloads. Children practise them online one question at a time, with instant marking, and parents see which topics need work.
Schools included
ACS (Junior) · ACS (Primary) · Ai Tong · Anglo-Chinese School · CHIJ · CHIJ St Nicholas Girls' · Catholic High · Henry Park · Maha Bodhi · Maris Stella High · Methodist Girls' · Nan Chiau · Nan Hua · Nanyang · Paya Lebar Methodist Girls' · Pei Chun · Pei Hwa · Raffles Girls' · Red Swastika · Rosyth · Rulang · Singapore Chinese Girls' · St Hilda's · St Joseph's · Tao Nan · Temasek
Schools with Primary 4 Science papers in the collection (all years). Papers are past school assessments; PaperLah is not affiliated with MOE, SEAB or the schools.
How this analysis is made
Every question in each paper is tagged with its topic, format and marks as printed. The figures above are counts over those questions: a topic's share of marks, the share of papers that include it, and so on. Topic names come from the papers and their answer keys, so similar topics can appear under slightly different names. Only aggregate figures are shown here; the questions themselves are practised inside PaperLah.
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