A. Patterns

1. Recognize, describe, extend, and create patterns involving whole numbers.
   • Descriptions using tables, verbal rules, simple equations, and graphs

B. Functions & Relationships

1. Describe arithmetic operations as functions, including combining operations and reversing them.
2. Graph points satisfying a function from T-charts, from verbal rules, and from simple equations.

C. Modeling

1. Use number sentences to model situations.
   • Using variables to represent unknown quantities
   • Using concrete materials, tables, graphs, verbal rules, algebraic expressions/equations
2. Draw freehand sketches of graphs that model real phenomena and use such graphs to predict and interpret events.
   • Changes over time
   • Rates of change (e.g., when is plant growing slowly/rapidly, when is temperature dropping most rapidly/slowly)

D. Procedures

1. Solve simple linear equations with manipulatives and informally
   • Whole-number coefficients only, answers also whole numbers
     Variables on one side of equation