Topic-by-topic practice packs for Cambridge Lower Secondary Stage 7, 8 and 9. Biology, Chemistry and Physics.
Other subjects
Science boosters are single-topic Cambridge Lower Secondary practice packs covering Biology, Chemistry and Physics — each with a cheat sheet, 20 leveled questions and full worked solutions.
Cambridge Lower Secondary Science (syllabus code 0893) is assessed at Stage 9 through the Cambridge Lower Secondary Checkpoint examination, which reports separate scores for Biology, Chemistry and Physics rather than a single combined science grade. Each discipline is scored on the 0 to 6 Cambridge strand scale. Source: Cambridge Lower Secondary Science (0893) Syllabus, Cambridge Assessment International Education
Cambridge Lower Secondary Science is not a single unified subject — it is three parallel disciplines taught together. A student's Biology score at Checkpoint reflects their command of cell biology, ecosystems and genetics. Their Chemistry score reflects particles, reactions and the periodic table. Their Physics score reflects forces, energy and waves. Each discipline has its own strand structure, and gaps in one do not cancel out strengths in another.
Cambridge Lower Secondary Science at Stage 7 covers cells and cell processes (Biology), states of matter and particles (Chemistry), and forces and motion (Physics). Stage 8 deepens each discipline before Stage 9 introduces genetics (Biology), the periodic table and reactivity series (Chemistry), and electromagnetic waves (Physics) — topics that feed directly into IGCSE content. Source: Cambridge Lower Secondary Science (0893) Curriculum Framework, Cambridge Assessment International Education
The Cambridge Lower Secondary Checkpoint science paper rewards precise use of scientific vocabulary. Command words such as "describe," "explain," "compare" and "evaluate" each require a different style of response — "describe" asks what is observed, while "explain" demands a mechanism or cause. Students who confuse these command words lose marks even when they know the underlying science. Source: Cambridge Lower Secondary Checkpoint Science Mark Scheme guidance, Cambridge Assessment International Education
Cambridge Lower Secondary Science boosters typically serve students preparing for the Stage 9 Checkpoint as well as students in Stage 7 and Stage 8 who need to consolidate individual topics before the content reappears in a more complex form in the next stage. Source: Cambridge Lower Secondary Science (0893) assessment overview, Cambridge Assessment International Education
Across our question bank of 540 Science questions (27 topics, 3 stages), CoreMark's internal analysis identifies these weak spots as the most consistent across Biology, Chemistry and Physics:
In Biology, students most commonly lose marks on questions requiring them to identify the correct cell organelle for a specific function (e.g., distinguishing mitochondria from chloroplasts in a context question), and on recall questions about specific ecosystems content at Stage 8 and 9. Source: CoreMark internal question bank analysis, 2025–2026
In Chemistry, balancing chemical equations and interpreting reactivity series questions are the two topics with the highest first-attempt error rates across all stages. Students who treat these as two separate skills — rather than both being applications of the same pattern recognition — consistently underperform on the stretch questions. Source: CoreMark internal question bank analysis, 2025–2026
In Physics, speed-distance-time calculations and questions requiring interpretation of velocity-time graphs are the most frequently dropped marks at Stages 8 and 9. These are also among the topics where Cambridge examiners' mark schemes include the most specific "show your working" requirements — meaning students who arrive at the correct answer without showing method do not receive full credit. Source: CoreMark internal question bank analysis, 2025–2026
Common questions