Anchor paper 327

Overall Achievement Level: 
practitioner
Student Number: 
2

Anchor Papers: 

Problem Solving

practitioner

Problem Solving Rationale

<p>The student's strategy of making a diagram of 10 crackers, crossing out five crackers to find five remaining crackers, and creating a subtraction equation, works to solve this task. The student's answer, "5," is correct.</p>

Reasoning and Proof

practitioner

Reasoning Proof Rationale

<p>The student demonstrates correct reasoning of the underlying concepts of the task. The student's diagram and scribing support correct understanding of a set of 10 crackers and subtraction.</p>

Communication Level

practitioner

Communication Rationale

<p>The student correctly uses the mathematical terms <i>diagram</i>, <i>key</i>, <i>number</i>.</p>

Connections Level

practitioner

Connections RationaleAnchor paper 327

<p>The student makes the mathematically relevant observation, "I see she eats five and it is five crackers still on the plate. That is the same number of crackers."</p>

Representation

practitioner

Representation Rationale

<p>The student's diagram is appropriate to the task and accurate. A key and the scribing defines the crackers.</p>