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Primary 6 Science exam paper analysis: 2016

PaperLah has 27 Primary 6 Science exam papers from 2016, set by 16 Singapore primary schools, with 1,753 questions worth 2,317 marks. The topics carrying the most marks were Heat (8.6%), Forces (8.2%) and Environment and ecosystems (6.8%); together the top 8 topics account for half of all marks. Heat appears in 100% of the papers. Multiple-choice questions make up 54% of marks, and 0% of questions are worth 3 marks or more, which usually means showing working. A typical paper has about 65 questions and 86 marks.

Based on 27 papers from 16 schools · Updated 2026-10-13

These figures describe the school papers in PaperLah's collection, including prelims, not official PSLE papers or topic weightings. They help with planning revision; they can't predict a particular exam.

Compared with all years: Heat took 8.6% of marks in 2016 (all years: 7.3%); Forces took 8.2% of marks in 2016 (all years: 9%); Environment and ecosystems took 6.8% of marks in 2016 (all years: 6.1%).

27papers from 16 schools
65questions in a typical paper
86marks in a typical paper
8topics 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.

Heatin 27 of 27 papers8.6%
Forcesin 26 of 27 papers8.2%
Environment and ecosystemsin 25 of 27 papers6.8%
Electricityin 25 of 27 papers6.4%
Energyin 26 of 27 papers6.2%
Food chains and websin 26 of 27 papers5.7%
Plant reproductionin 26 of 27 papers5.5%
Scientific investigationin 25 of 27 papers4.7%
Above this line: 8 topics carry half of all marks
Photosynthesisin 26 of 27 papers4.5%
Matterin 24 of 27 papers4.4%
Show as table
Topic% of marksPapers
Heat8.6in 27 of 27 papers
Forces8.2in 26 of 27 papers
Environment and ecosystems6.8in 25 of 27 papers
Electricity6.4in 25 of 27 papers
Energy6.2in 26 of 27 papers
Food chains and webs5.7in 26 of 27 papers
Plant reproduction5.5in 26 of 27 papers
Scientific investigation4.7in 25 of 27 papers
Photosynthesis4.5in 26 of 27 papers
Matter4.4in 24 of 27 papers
Adaptations4.3in 23 of 27 papers
Changes of state and water cycle4.2in 23 of 27 papers
Light3.9in 26 of 27 papers
Plant parts and transport3.6in 25 of 27 papers
Magnets3.5in 24 of 27 papers
Respiratory and circulatory systems3.2in 24 of 27 papers
Classification2.6in 22 of 27 papers
Cells2.5in 23 of 27 papers
Life cycles2.5in 22 of 27 papers
Materials2.3in 22 of 27 papers
Digestive system2.1in 19 of 27 papers
Reproduction in humans and animals1.5in 19 of 27 papers
Fungi and bacteria1.3in 17 of 27 papers
Living and non-living things0.6in 5 of 27 papers
Human body systems0.4in 8 of 27 papers
Dengue fever0.1in 1 of 27 papers
Rainforest layers0.1in 1 of 27 papers
Nutrient cycle0.1in 1 of 27 papers
Rate of burning0in 1 of 27 papers
Reliability of results0in 1 of 27 papers

What a paper is made of

How children answer, as a share of marks.

  • Multiple choice 54%
  • Open-ended (show working) 35%
  • Short answer 6%
  • Drawing or labelling 3%
  • Other 2%
Show as table
Format% of marks
Multiple choice54.3
Open-ended (show working)34.6
Short answer6.1
Drawing or labelling2.7
Fill in the blank1.7
Number answer0.3
Other0.2
Word bank0.1

Marks per question

Share of questions worth 1, 2, 3, 4 or 5+ marks. 10% have no marks printed. Higher-mark questions usually need working.

1: 46% of questions46%12: 44% of questions44%2
Show as table
Marks% of questions
145.9
243.8

How likely a topic comes up

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

Heat100%
Forces96.3%
Energy96.3%
Food chains and webs96.3%
Plant reproduction96.3%
Photosynthesis96.3%
Light96.3%
Electricity92.6%
Environment and ecosystems92.6%
Scientific investigation92.6%
Show as table
Topic% of papers
Heat100
Forces96.3
Energy96.3
Food chains and webs96.3
Plant reproduction96.3
Photosynthesis96.3
Light96.3
Electricity92.6
Environment and ecosystems92.6
Scientific investigation92.6
Plant parts and transport92.6
Magnets88.9
Matter88.9
Respiratory and circulatory systems88.9
Adaptations85.2
Changes of state and water cycle85.2
Cells85.2
Classification81.5
Life cycles81.5
Materials81.5
Digestive system70.4
Reproduction in humans and animals70.4
Fungi and bacteria63
Human body systems29.6
Living and non-living things18.5
Rainforest layers3.7
Dengue fever3.7
Rate of burning3.7
Reliability of results3.7
Nutrient cycle3.7

Exam types

Which school exams these papers come from.

End-of-Year / SA216 papers59.3%
Mid-Year / SA111 papers40.7%

Key facts

  • 27 papers, 1,753 questions, 2,317 marks, from 16 schools.
  • 8 topics carry half of all marks.
  • Most-tested topic: Heat, 8.6% of marks.
  • Most common topic across papers: Heat, in 100% of papers.
  • Exam types: End-of-Year / SA2 and Mid-Year / SA1.

Questions parents ask

What topics come up most in Primary 6 Science exam papers in 2016?

By share of marks, the most-tested topics were Heat (8.6%), Forces (8.2%), Environment and ecosystems (6.8%), Electricity (6.4%) and Energy (6.2%).

How many questions and marks are in a Primary 6 Science paper?

A typical paper in this set has about 65 questions and 86 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?

27 papers from 16 schools, from these exam types: End-of-Year / SA2 and Mid-Year / SA1. 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 · Christian Brothers · Henry Park · Maha Bodhi · Maris Stella High · Methodist Girls' · Nan Hua · Nanyang · Paya Lebar Methodist Girls' · Pei Chun · Pei Hwa · Raffles Girls' · Red Swastika · River Valley · Rosyth · Singapore Chinese Girls' · Singapore Hokkien Huay Kuan · St Hilda's · Tao Nan · Temasek

Schools with Primary 6 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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