WHY? The bat's wing is a fascinating structure that has similarities to the wing of a bird and a human arm. Without the wonder of the structure of the bat's wing it could not fly. There are obvious differences as well between the bat's wing, the bird's wing, and the human arm. The wing of the bat has a thin membrane covering, and not feathers like birds do. And the arm of a human being is altogether of a magnificent form that distinguishes him from the animals. ASSESSMENT: Can the student communicate what they observed?

Student is able to communicate all of the similarities and differences between a bat's wing, a bird's wing, and a human arm. Student is able to communicate most of the similarities and differences between a bat's wing, a bird's wing, and a human arm. Student is able to communicate some of the similarities and differences between a bat's wing, a bird's wing, and a human arm. Student is able to communicate one of the similarities and differences between a bat's wing, a bird's wing, and a human arm.

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