1. Human body systems—major organs for circulatory, respiratory, nervous, digestive systems; skin functions and protection roles
2. Solubility and mixtures—soluble vs insoluble solids in water, separation using filtration, sieving, and magnetic attraction
3. Forces and motion—friction direction identification, bouncing and timing experiments, force measurement, fair testing setup
4. Electrical circuits—conductivity testing, materials in circuits (e.g., copper, steel), quiz board logic, component identification
5. Environmental awareness—recycling habits, mass vs weight units, graph interpretation, reasons for increasing recycling trends
6. Scientific investigations—reversible vs irreversible changes, temperature effects on cooking time, fair test control, data prediction based on trends