Anchor paper 480
Anchor Papers:
Problem Solving
practitioner
Problem Solving Rationale
<p>The student's strategy of making a diagram of the puzzle pieces used each of three days works to solve part of the task. The student's answer, "5," is correct.</p>
Reasoning and Proof
practitioner
Reasoning Proof Rationale
<p>The student uses correct reasoning of the underlying concepts of the task. The student organizes and determines a total of 145 puzzle pieces are used in three days. The student finds the number of remaining puzzle pieces needed to finish the puzzle by applying subtraction.</p>
Communication Level
practitioner
Communication Rationale
<p>The student correctly uses the mathematical term <i>day</i> from the task. The student also correctly uses the mathematical terms <i>diagram</i>, <i>key</i>, <i>number</i>.</p>
Connections Level
practitioner
Connections RationaleAnchor paper 480
<p>The student makes the mathematically relevant observations, "I see 36 is 3 dozen pieces" and "I see 68 is the most pieces." The student's statement, "The 5 pieces are on the floor," is not considered a mathematically relevant statement. This comment could lead to an engaging classroom writing activity determining where those five missing pieces are.</p>
Representation
practitioner
Representation Rationale
<p>The student's diagram is appropriate to the task and accurate. A key defines the days and puzzle pieces. The entered "numbers" are correct.</p>