1. Matter and materials: states at room temperature (solid, liquid, gas), heating and cooling (melting, condensation), mercury properties (flows at room temperature, contracts when cooled), magnetic and non-magnetic objects 2. Sound and pitch: string instruments′ vibration, pitch based on size, noise level measurement using decibels, sound reduction strategies (curtains, closed windows) 3. Human body and growth: skeleton functions (support, protection), muscle function (contracting, paired action), model arm representation, growth tracking via height and bar charts 4. Adaptations and environment: bat features for night hunting, environmental impact (pollution effects, recycling), living organism adaptation to conditions 5. Electricity and circuits: labeling circuit components (lamp, switch, wire, cell), lamp failure due to power depletion, complete circuit operation, model construction 6. Data handling and reasoning: bar chart drawing, material classification table, Venn diagram application, estimation (Rajiv′s height, temperature readings), correct sequence of muscle function and movement