6 How can we use suitable materials to make an insulated bag?
1. What problem does Jenny have? What is Fred’s suggestion?
Why don’t you apply your knowledge of thermal conductivity to design an insulated bag?
In winter, warm water gets cold quickly but it’s inconvenient to carry a heavy vacuum bottle around.
How can you introduce your insulated bag to your classmates? What is special about your insulated bag? Presentation and r eflection
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Improvement 6
Do the test results match your prediction? How can you improve your design?
Testing and analysis 5
How can you test the insulation performance of the bag? How can you record the test results? How can you prove that the water is kept warm because of the insulated bag, but not other factors?
We may face different problems and constraints when we design and make a product. We need to be patient and creative.
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