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responses
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y8
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| Questions/instructions: Show card.
This card tells you that 17 times 6 is 102. If you already know that 17 times 6 equals 102, how would you work out 19 times 6. Tell me how you would work it out. Prompt: Can you explain that a bit more to me? |
Strategy: |
You
have 17 groups of 6;
you need 2 more groups of 6; that is 2 x 6 = 12 more; 102 + 12 = 114 |
45
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You
have 6 groups of 17;
you need 2 more per group; that is 6 x 2 = 12 more; 102 + 12 = 114 |
7
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You
need to add 12 (6 x 2),
but not clearly explained why |
9
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Any
method where 19 x 6 calculated directly
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17
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No
workable strategy explained
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22
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| Commentary.
About 60 percent of the students realised that the task could be achieved without direct calculation of 19 x 6. However more than 20 percent did not describe a workable strategy |
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