Question

Estimate the area of Antarctica using the map scale. (1 Unit of Map Scale = 200 units distance) Show your working out and explain how you made your estimate​

Answer 1

Answer:

Estimate the area of Antarctica using the map scale.

Show your work and explain how you made your estimate. (You can draw over the map if it helps you with your estimation)

Answer:

To receive full credit, students needed to provide the correct answer, between 12,000,000 square kilometers and 18,000,000 square kilometers (units not required), and could show evidence of using a correct method such as drawing a square or cirle to estimate the answer. Students who provided the correct answer but did not show any work also received full credit.

Students who show evidence of using a correct method, but provided an incorrect answer, received partial credit.

United States percent full credit: 10%

OECD percent full credit: 20%

United States percent partial credit: 38%

OECD percent partial credit: 40%

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