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Select Examples and Nonexamples
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ParaPro
PPM.193 Select Examples and Nonexamples
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A student needs to see where a category starts and stops. The objective is "Represent the inequality x > 3 on a number line." Which example/nonexample pair most clearly shows the boundary?
A
Example: a closed circle at 4 with shading to the right; Nonexample: a closed circle at 3 with shading to the right
B
Example: a closed circle at 3 with shading to the right; Nonexample: an open circle at 3 with shading to the right
C
Example: an open circle at 3 with shading to the left; Nonexample: an open circle at 3 with shading to the right
D
Example: an open circle at 3 with shading to the right; Nonexample: a closed circle at 3 with shading to the right
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