1. Flower structure and life cycle: anther, stigma, petal attraction, germination, seedling, seed dispersal
2. States of matter: solid/liquid/gas at 20 °C, melting/boiling points, water identification, impurities in natural water
3. Sound: volume comparison, pitch as high/low, sound level analysis from chart
4. Water cycle: evaporation, condensation, precipitation, seasonal pattern between temperature and rainfall
5. Dissolving experiment: effect of temperature, use of balance, repetition for reliability, risk control in heating
6. Magnet strength and environmental impact: magnet ranking, bar chart plotting, plastic pollution mass data, pollution definition