A fourth-grade teacher is midway through a unit on fractions. During a whole-group discussion, she notices that several students are confusing numerators and denominators. Which of the following assessment strategies would be most effective for the teacher to use at this moment to inform her next instructional steps?
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A
Administer the end-of-unit chapter test to identify which students need remediation.
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B
Give students an exit ticket with two problems asking them to label the numerator and denominator in given fractions.
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C
Assign extra homework problems on identifying parts of a fraction for the entire class.
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D
Have students create a detailed portfolio of their work on fractions to be submitted at the end of the unit.