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Comparing Amounts with More Than, Less Than, and Equal to Students are introduced to the concepts of greater than , less than and equal to by observing quantities and making comparisons. Using various instructional materials such as modeling clay, buttons, beans, and cotton balls, students create amounts to compare using the open-mouthed fish. Depending which fish is chosen, the fish cut-out (with its mouth open) represents either greater than or less than . For equivalent amounts, a clam cut-out represents equal to . This introductory lesson can be assessed through visual observation and verbal questioning. A group size of 3–6 students per group is optimal.
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