1. Ecosystems and Food Chains – Identifying producers and consumers, role of decomposers, predator-prey relationships, and plant nutrient absorption. 2. Forces and Motion – Measuring forces in newtons, reducing friction, effects of air resistance, balanced vs. unbalanced forces on movement. 3. States of Matter and Dissolving – Changes of state (melting, evaporating), dissolving processes, solubility in different liquids, and separating mixtures. 4. Electricity and Circuits – Identifying components, effects of adding cells on brightness and motor speed, and functions of switches in electrical circuits. 5. Human Biology and Adaptations – Pulse rate during exercise, circulatory system functions, lung expansion during breathing, and adaptation of plants and animals to environments. 6. Scientific Investigation and Data Interpretation – Conducting fair tests, recording systematic observations, predicting experimental outcomes, and constructing graphs for analysis.