Teachers could either cut and paste each coordinate on a separate blue index card or copy this page on blue paper, then cut and paste each coordinate on a separate index card.
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( x, y ) ( 0, x + 1 ) |
( x, y ) ( 1, x + 1 ) |
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( x, y ) ( 2, x + 1 ) |
( x, y ) ( 3, x + 1 ) |
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( x, y ) ( 4, x + 1 ) |
( x, y ) ( 5, x + 1 ) |
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( x, y ) ( 6, x + 1 ) |
(x, y ) ( 7, x + 1 ) |
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(x, y ) ( 8, x + 1 ) |
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