- Different group paces: Prepare differentiated tasks (e.g., extra experiment, colourable filter model, redesign template).
- Handling failure: Emphasize that in science it’s okay not to succeed on the first try – it’s part of the learning process!
- Material/tool shortages: Have backup options ready (e.g., CD case pieces as prisms, soil instead of charcoal, small stones).
- Noise and focus management: Use timed tasks such as: “You have 5 minutes to plan!” – helps maintain concentration.
- Hygiene and order: Always include handwashing before and after working with water; paper towels should be easily accessible.
- Shared success experience: At the end, each group receives a certificate or an “Eco Engineer Stamp” to boost motivation.
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