1. Classification and Identification – Differentiating animals by legs and wings, identifying plants by leaf shape, and linking animals to their habitats. 2. Electricity and Circuits – Understanding circuit symbols, effects of adding more cells or bulbs, and identifying conductors and insulators. 3. Materials and Their Properties – Identifying dissolvable substances, separating mixtures using filtration, reversible vs. irreversible changes, and evaporation. 4. Forces and Motion – Effects of air resistance, direction of forces, weight measurement, and impact of friction in different situations. 5. Ecosystems and Food Chains – Understanding producers, consumers, predators, prey, food webs, and the role of fertilizers in plant growth. 6. Scientific Investigation and Data Analysis – Measuring liquid volumes accurately, interpreting temperature data, analyzing leaf length distributions, and ensuring experimental reliability.