Task# Rectangle Perimeter 3

Illustrative MathematicsVaries

The purpose of this task is to ask students to write expressions and to consider what it means for two expressions to be equivalent. This is another variation of the Rectangle Perimeter problem shown in '6EE Rectangle Perimeter 1' and '6EE Rectangle Perimeter 2.' It goes one step further than '6EE Rectangle Perimeter 1' by asking students to explore the idea of equivalent expressions in addition to writing and using an expression.