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Primary 4 Science exam paper analysis: 2016

PaperLah has 23 Primary 4 Science exam papers from 2016, set by 12 Singapore primary schools, with 1,496 questions worth 1,941 marks. The topics carrying the most marks were Matter (16%), Light (13%) and Life cycles (12%); together the top 4 topics account for half of all marks. Matter appears in 96% of the papers. Multiple-choice questions make up 52% of marks, and 0.3% of questions are worth 3 marks or more, which usually means showing working. A typical paper has about 65 questions and 84 marks.

Based on 23 papers from 12 schools · Updated 2026-10-13

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 2016 (all years: 15%); Light took 13% of marks in 2016 (all years: 13%); Life cycles took 12% of marks in 2016 (all years: 11%).

23papers from 12 schools
65questions in a typical paper
84marks in a typical paper
4topics carry half of all marks

Where the marks are

Topics ranked by their share of all marks. The blue ones above the line together make up half.

Matterin 22 of 23 papers16%
Lightin 18 of 23 papers13.2%
Life cyclesin 22 of 23 papers12%
Magnetsin 20 of 23 papers9.4%
Above this line: 4 topics carry half of all marks
Heatin 15 of 23 papers9.2%
Classificationin 21 of 23 papers6.9%
Materialsin 21 of 23 papers6%
Plant parts and transportin 21 of 23 papers6%
Digestive systemin 20 of 23 papers5.9%
Scientific investigationin 20 of 23 papers3.5%
Show as table
Topic% of marksPapers
Matter16in 22 of 23 papers
Light13.2in 18 of 23 papers
Life cycles12in 22 of 23 papers
Magnets9.4in 20 of 23 papers
Heat9.2in 15 of 23 papers
Classification6.9in 21 of 23 papers
Materials6in 21 of 23 papers
Plant parts and transport6in 21 of 23 papers
Digestive system5.9in 20 of 23 papers
Scientific investigation3.5in 20 of 23 papers
Living and non-living things2.9in 19 of 23 papers
Plant reproduction2.7in 16 of 23 papers
Electricity1.3in 10 of 23 papers
Human body systems1.2in 14 of 23 papers
Forces0.8in 7 of 23 papers
Fungi and bacteria0.8in 9 of 23 papers
Reproduction in humans and animals0.5in 7 of 23 papers
Changes of state and water cycle0.5in 3 of 23 papers
Adaptations0.3in 4 of 23 papers
Photosynthesis0.2in 2 of 23 papers
Respiratory and circulatory systems0.1in 1 of 23 papers
Effects of opening size on water flow0.1in 1 of 23 papers
Rusting0.1in 1 of 23 papers
Environment and ecosystems0.1in 1 of 23 papers
Energy0.1in 1 of 23 papers
Mosquito prevention0in 1 of 23 papers

What a paper is made of

How children answer, as a share of marks.

  • Multiple choice 52%
  • Open-ended (show working) 24%
  • Short answer 14%
  • Fill in the blank 4%
  • Other 7%
Show as table
Format% of marks
Multiple choice51.6
Open-ended (show working)23.9
Short answer14.4
Fill in the blank3.7
Drawing or labelling2.9
Word bank1.9
Number answer1.3
Other0.4

Marks per question

Share of questions worth 1, 2, 3, 4 or 5+ marks. 11% have no marks printed. Higher-mark questions usually need working.

1: 47% of questions47%12: 42% of questions42%23: 0% of questions0%3
Show as table
Marks% of questions
146.5
241.6
30.3

How likely a topic comes up

The share of papers with at least one question on the topic.

Matter95.7%
Life cycles95.7%
Classification91.3%
Materials91.3%
Plant parts and transport91.3%
Magnets87%
Digestive system87%
Scientific investigation87%
Living and non-living things82.6%
Light78.3%
Show as table
Topic% of papers
Matter95.7
Life cycles95.7
Classification91.3
Materials91.3
Plant parts and transport91.3
Magnets87
Digestive system87
Scientific investigation87
Living and non-living things82.6
Light78.3
Plant reproduction69.6
Heat65.2
Human body systems60.9
Electricity43.5
Fungi and bacteria39.1
Forces30.4
Reproduction in humans and animals30.4
Adaptations17.4
Changes of state and water cycle13
Photosynthesis8.7
Respiratory and circulatory systems4.3
Mosquito prevention4.3
Environment and ecosystems4.3
Energy4.3
Effects of opening size on water flow4.3
Rusting4.3

Exam types

Which school exams these papers come from.

Mid-Year / SA112 papers52.2%
End-of-Year / SA211 papers47.8%

Key facts

  • 23 papers, 1,496 questions, 1,941 marks, from 12 schools.
  • 4 topics carry half of all marks.
  • Most-tested topic: Matter, 16% of marks.
  • Most common topic across papers: Matter, in 96% of papers.
  • 0.3% of questions are worth 3 marks or more.
  • Exam types: Mid-Year / SA1 and End-of-Year / SA2.

Questions parents ask

What topics come up most in Primary 4 Science exam papers in 2016?

By share of marks, the most-tested topics were Matter (16%), Light (13%), Life cycles (12%), Magnets (9.4%) and Heat (9.2%).

How many questions and marks are in a Primary 4 Science paper?

A typical paper in this set has about 65 questions and 84 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?

23 papers from 12 schools, from these exam types: Mid-Year / SA1 and End-of-Year / SA2. 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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