Formative Assessment 46

Assessment Problem: 

(x+3)2 + 4(x+3) = 45

Common Responses: 

(picture)

Mathematical Issues: 

This is modeling completing the square to solve the problem.

Domain: 
Algebraic Relations
Theme: 
Modeling with Tiles
Common Core Standards: 
Modeling
Research References: 
Maier, E. Sketching Solutions to Algebraic Equations. Unit XIII Activity 3 pg 1.