A teaching assistant is helping a first-grade student understand the concept of addition. The student is struggling to grasp what '5 + 3' means abstractly. Which of the following strategies would be most effective for the teaching assistant to use first?
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A
Explaining the commutative property of addition to the student.
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B
Using counting blocks to physically represent 5 blocks and then adding 3 more blocks.
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C
Giving the student a worksheet with more addition problems for practice.
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D
Telling the student to memorize the answer.