Why should we choose materials carefully?, Everything needs to be designed to perfectly fulfill its purpose, The material might be ugly, Materials are expensive, What characteristics should we consider?, rigidity, weight, aesthetics, toxicity, all of the above, What do sensory properties relate to?, Senses (touch, texture, brightness transparency), Mechanics, Conductors, Toxicity, What do sonic conductors allow to pass easily?, Heat, Electricity, Sound, What are durable materials?, Materials that bend easily, Materials that scratch easily, Materials that are resistant to force, Materials that stretch easily, What do chemical properties consider?, Toxicity and recyclability, Conductors and Insulators, Aesthetics, Durability.

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