1. Biology—plant reproduction (pollination, fertilisation, seed dispersal), food chains and webs, classification (vertebrates/invertebrates), adaptation traits, predator-prey balance 2. Chemistry—particle model for states of matter, melting/boiling processes, chemical vs physical changes, diffusion, reversible/irreversible changes, separation techniques 3. Physics—forces and motion (balanced/unbalanced), friction and speed, light (reflection, shadows), sound (vibrations, hearing ranges), basic electrical circuits 4. Earth Science—types of rocks (igneous, sedimentary), fossilisation process, acid rain and erosion, air pollution bioindicators (lichens), renewable vs non-renewable energy 5. Scientific skills—variable identification, safety in experiments, use of thermometers and ammeters, pattern recognition, graph interpretation, fair testing principles