8 The Designed World
Materials and Manufacturing
For Grades: 3-5
Learning Goal 2
Humans have produced a wide variety of materials, such as steel, plastic, and nylon, that do not appear in nature.
Learning Goal 3
Discarded products contribute to the problem of waste disposal.
Learning Goal 3b
Sometimes it is possible to use the materials from discarded products to make new products, but materials differ widely in the ease with which they can be recycled.