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Part 3: Posing a Problem [Begin: 14:19]
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To begin development of the fourth kind of calculation, the teacher presents a problem using the overhead projector. The problem reads, "An iron sheet with a length of 0.5m and a width of 20cm weighs 3.9kg. Calculate the height (thickness) of the sheet (7.8g/cm3)." The teacher leads a brief introductory discussion of the problem, reminding students to think about "our three step [method]: given, wanted, and calculation path." | ||
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