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Number Sense

Odd Plus Odd

Five-ninety-nines

Multiplication

12 x 13 Part 1

12 x 13 Part 2

Fractions

7/8 = 11/12

Ratio / Proportion

Ratio Oranges

Problem Solving

Pen & Pencil

Algebraic Reasoning

Generalization 1

Generalization 2

Generalization 3

Algebraic Reasoning 2

Table 1

Table 2

Table 3

Properties

Associative Property

Affective Issues

Persistence

Number Theory

Factors of Twelve