Anchor paper 304

Overall Achievement Level:

expert

Student Number:

Anchor Papers:

Problem Solving

expert

Problem Solving Rationale

The student's strategy of using a diagram to show the number of completed pictures on the door and the number of pictures needed to be completed works to solve the task. The student's answer, "5 more to Do," is correct. The student also verifies that their answer is correct.

Reasoning and Proof

expert

Reasoning Proof Rationale

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 five pictures need to be completed. The student also uses a tally to compare the completed and need to be completed pictures. The student also brings the concepts of odd, even, and one-half to the task.

Communication Level

expert

Communication Rationale

The student correctly uses the mathematical terms diagram, key, even, odd, tally, equals, more. The student also uses the mathematical notation, "1/2."

Connections Level

expert

Connections RationaleAnchor paper 304

The student makes mathematically relevant Expert observations: "10-even, ten pictures is even number," "5-odd, 5 pictures is odd number," "1/2 of the pictures are done but 1/2 are not done." The student uses a tally to verify that their diagram is correct and states, "5 + 5 = 10, five are done, five more to do equals ten in all for pictures," "5 more to Do," "You always got to do five more pictures."

Representation

expert

Representation Rationale

The student's diagram of the five completed pictures on the door and the five pictures needed to be drawn is appropriate to the task and accurate. The student's key and scribing defines the paper, animal pictures and door. The student creates an accurate tally using their key to verify that five more pictures need to be drawn.