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128

Copyright © 3P Learning – These resources have been created in partnership with Dr. Marian Small.

For more information visit

www.mathletics.com

Rubric

Level 1

Level 2

Level 3

Level 4

The student cannot

determine a possible

solution over 50.

The student cannot

explain why the possible

numbers had to be odd.

The student does not

notice relationships

between solutions.

The student determines

one possible solution

that may or may not

be over 50 using

counting, but no mental

strategies.

The student cannot

explain why the possible

numbers had to be odd.

The student does not

notice relationships

between solutions.

The student determines

at least one or two

possible correct values

beyond 50 using some

mental strategies.

The student can explain

why the possible

numbers had to be odd.

The student notices

that solutions are

12 apart and might

refer to the fact that

12 = 3 x 4, but cannot

explain why solutions

are that far apart.

The student determines

at least three or four

possible correct values

beyond 50 using

mental strategies.

The student can clearly

explain why the possible

numbers had to be odd.

The student can clearly

explain why possible

solutions are 12 apart.

Leftovers

Number