Anchor paper 523
Anchor Papers:
Problem Solving
apprentice
Problem Solving Rationale
<p>The student's strategy of diagramming the ladybugs and crickets Ben and Jill have in their jars would work to solve the task. The student omits one cricket from Jill's jar, which leads to an incorrect answer, "Yes."</p>
Reasoning and Proof
practitioner
Reasoning Proof Rationale
<p>The student shows correct reasoning of the underlying concepts of the task. The student understands that a total number of insects in each jar needs to be determined and the two totals compared to determine if Dad is correct. Omitting one cricket from Jill's jar is considered a careless error and not a flaw in the student's reasoning. </p>
Communication Level
practitioner
Communication Rationale
<p>The student correctly uses the mathematical terms <i>diagram</i>, <i>key</i>, <i>more than</i>.</p>
Connections Level
practitioner
Connections RationaleAnchor paper 523
<p>The student makes the mathematically relevant observation, "I know Ben has one more ladybug than Jill because he has nine ladybugs and she has eight ladybugs."</p>
Representation
apprentice
Representation Rationale
<p>The student's diagram is appropriate to the task but is not accurate. The seventh cricket is missing from Jill's jar. A key defines the ladybugs, crickets, and jars. </p>