Teaching Integrated Science Under CBC: Strands Every Junior School Teacher Should Know

Integrated Science is one of the subjects where the shift from primary school to Junior School catches teachers off guard. Learners arrive from Upper Primary having studied "Science & Technology," and are now expected to sit a single paper — 905 Integrated Science — that draws together concepts they previously met as separate strands. Understanding how that paper is built, and what KNEC actually rewards in it, makes a real difference to how you plan revision and set internal tests.

What Integrated Science Covers at Junior School

At Junior School, Integrated Science brings together core scientific concepts and their real-world application into one subject, rather than teaching science-adjacent areas separately the way Upper Primary's Science & Technology does. It's worth being precise about scope here: Home Science content — foods and nutrition, home management, clothing and textiles — is not part of Integrated Science at Junior School level. That content sits inside Agriculture & Nutrition (906) instead. If you're planning a scheme of work or setting a test, keep 905 focused on general science and technology concepts and their application, not on food, nutrition, or home-management topics that belong to a different paper entirely.

Understanding the PP1/PP2 Split: Theory vs Practical

The 905 paper has two components, and they test very different things. Paper 1 (Theory) is the one learners sit as a timed exam: Section A carries 30 multiple-choice questions worth 30 marks, and Section B is a structured section running from Question 31 to Question 40, worth 40 marks. That gives a total of 70 marks in 1 hour 40 minutes, and learners are expected to answer all questions — there's no optional section to skip.

Paper 2, by contrast, is a school-based laboratory practical assessed through continuous assessment rather than sat as a single term exam. This distinction matters for how you plan your term: your internal tests and mock papers should be built to mirror PP1's format specifically, since that's the timed, high-stakes component learners need the most practice with. Practical competence is still important, but it's assessed differently and on a different timeline, so don't let mock-exam time crowd out the lab work PP2 is actually measuring.

Applying the Scenario-Wrap House Style to Science Questions

One pattern is consistent across KNEC's real science papers: questions rarely ask for a bare fact in isolation. Instead, they wrap the content in a short scenario — "A farmer observes that…", "During a class activity, a learner notices…" — and then ask the learner to apply a concept to that situation. This isn't decoration. It's a deliberate way of testing whether learners can use scientific knowledge, not just recall it.

For your own tests and revision materials, this means resisting the temptation to write questions like "What is X?" and instead asking learners to reason through a situation that requires knowing X. A scenario-wrapped question naturally sits higher on the cognitive scale — closer to Apply or Analyse than plain Recall — which is exactly where KNEC pitches most of its Integrated Science items. Training learners on recall-only questions and then handing them a scenario-heavy paper on exam day is one of the most common reasons students underperform relative to their classroom grades.

Setting Strong Section B Structured Questions

Section B (Questions 31–40) is where the bulk of the marks sit — 40 out of 70 — so it deserves proportionate attention when you're building internal assessments. A few practical habits help:

• Build each question around a short scenario or observation, not a direct instruction to define or list. Even a two-sentence context (an experiment result, a described phenomenon, a real-world situation) pushes the question toward application.
• Vary the depth of reasoning required across the ten questions. Not every structured question needs multiple sub-parts, but across the set you want a mix — some quicker application items and some that require the learner to work through cause and effect or interpret a result.
• Mark allocation should signal expected depth. A one-mark sub-question should have a one-line expected answer; a three- or four-mark sub-question should require the learner to explain or justify, not just state.
• Keep language age-appropriate and unambiguous. Junior School learners are still developing exam literacy, so a well-constructed scenario should be clear enough that confusion comes from the science, not from the wording.

If you're using PaperSetter to build these papers, generating a bank of scenario-based structured items — rather than starting from bare definitional questions — will save you the editing step of having to "wrap" a fact-recall question after the fact.

Bringing It Together

The 905 Integrated Science paper rewards learners who can apply scientific ideas to real situations, not just recite them. Keeping your scope correctly bounded — general science and technology content, not Home Science material — and setting your PP1-style internal tests around scenario-driven Section A and Section B items will put your learners much closer to what they'll actually face on exam day. Treat PP2's practical work as its own continuous strand rather than folding it into your timed-test revision, and your term plan will match the real shape of the KJSEA assessment far more closely.