Anchor paper 89
Anchor Papers:
Problem Solving
practitioner
Problem Solving Rationale
<p>The student's strategy of making a diagram (area model) to determine if 1/2 of a pie eaten is the same as 4/8 of a pie eaten works to solve this task. The student's answer, "Both are right," is correct.</p>
Reasoning and Proof
practitioner
Reasoning Proof Rationale
<p>The student demonstrates understanding of the underlying concept of comparing two fractions in their area model and key.</p>
Communication Level
practitioner
Communication Rationale
<p>The student correctly uses the mathematical terms <i>diagram</i>, <i>key</i>, <i>1st</i>, <i>2nd</i>, <i>3rd</i> and <i>whole</i>. The student also correctly uses the mathematical notation 1/2, 4/8, 2/4. Mathematical notation of fractions is different from the written form because the student has to determine the correct numerator and denominator.</p>
Connections Level
practitioner
Connections RationaleAnchor paper 89
<p>The student makes the mathematical observations, "1/2 + 1/2 = 1 whole pie," "There is 1/2 left of pie," and, "There are many ways to write the eaten pie 1/2, 2/4, 4/8."</p>
Representation
practitioner
Representation Rationale
<p>The student's area model is appropriate to the task and accurate. A title is provided and a key defines the sections of the pie that are labeled.</p>