**Title:** Difference of Squares

**Description:**
In this lesson, from Illuminations, students explore arithmetic statements leading to a result that is the factoring pattern for the difference of two squares. Students analyze and represent patterns with symbolic rules, compare quantities with integers, and learn to communicate mathematical thinking to peers and teachers.

**Standard(s): **

[MA2013] AL1 (9-12) 8: Use the structure of an expression to identify ways to rewrite it. [A-SSE2]

[MA2013] AL2 (9-12) 13: Use the structure of an expression to identify ways to rewrite it. [A-SSE2]

[MA2013] ALT (9-12) 13: Use the structure of an expression to identify ways to rewrite it. [A-SSE2]