A telephone survey was conducted recently, in the survey of more than 2,000 adults, 21% said they believed the sun revolved around the earth.An (1) _____ 7% did not know which revolved around which I have no doubt that (2) _____ all of these people were taught in school that the earth revolves around the sun; and they may even have written it (3) _____ a test.But they never adjusted their incorrect mental models of planetary (4) _____ because their everyday observations didn’t support what their teachers told them: people see the sun “moving” across the sky as morning turns to night, and the earth seems stationary (5) _____ that is happening.

　　Students can learn the right answers by heart in class, and yet never combined them with their working models of the world.The objectively correct answer the professor accepts and the (6) _____ personal understanding of the world can (7) _____ side by side, each unaffected by the other.

　　Outside of class, the students continue to use the (8) _____ model in that it has always worked well in that circumstance.Unless professors address (9) _____ errors in students’ personal models of the world, students are not (10) _____ to replace them with the correct one.
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