Anchor paper 300
Anchor Papers:
Problem Solving
apprentice
Problem Solving Rationale
<p>The student's strategy of diagramming pictures would work to solve the task, but the student omits the 10th picture. The student's answer, "4," is not correct.</p>
Reasoning and Proof
practitioner
Reasoning Proof Rationale
<p>The student shows correct reasoning of the underlying concepts of the task. The student diagrams the completed pictures, the pictures needed to be completed, and compares the two totals to determine that four pictures need to be completed. The student makes an error in leaving out picture number 10. This is not considered a lack of reasoning but a careless counting error.</p>
Communication Level
practitioner
Communication Rationale
<p>The student correctly uses the mathematical terms <i>diagram</i>, <i>key</i>.</p>
Connections Level
novice
Connections RationaleAnchor paper 300
<p>The student does not make any mathematically relevant observation about their solution.</p>
Representation
apprentice
Representation Rationale
<p>The student's diagram of the five completed pictures and four pictures needed to be completed is appropriate to the task but is not accurate. The 10th picture is not indicated. The student's key and scribing defines the finished pictures and pictures needed to be drawn.</p>