data:image/png;base64,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

110i

121

The nested FOR loops are the important part of this solution. Details like the starting position of the sprite might be different in student solutions.-100-50

numberX's turn?5.6.2.3

Set to True for 5.6.2.7 behavior, False for 5.6.2.4 behavior. X's turn?

5.6.2.7

numberX's turn?data:image/png;base64,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21true1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16

The nested FOR loops are the important part of this solution. Details like the starting position of the sprite might be different in student solutions.-100-50

110i

numberX's turn?

X

5.6.3.7

5.6.3.5

helper for 5.6.3.7

numberX's turn?

data:image/png;base64,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true1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16

The nested FOR loops are the important part of this solution. Details like the starting position of the sprite might be different in student solutions.-100-50

110i

numberX's turn?

numberX's turn?

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The nested FOR loops are the important part of this solution. Details like the starting position of the sprite might be different in student solutions.-100-50

110i

numberX's turn?

numberX's turn?

X5.6.4.2

This is a place where students are likely to use an unnecessary IF/ELSE block because the solution above seems "too easy" and therefore suspicious. Ideally they should both understand that their solution is correct if it works -- there isn't only one "right" way to write a program -- and that composition of functions enables fairly complicated algorithms to be one-liners when actually coded.

5.6.3.7

5.6.3.5

helper for 5.6.3.7

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