Nebraska Core Academic Content Standards
NE.MA.3.2. ALGEBRA: Students will communicate algebraic concepts using multiple representations to reason, solve problems, and make connections within mathematics and across disciplines.
MA.3.2.1. Algebraic Relationships: Students will demonstrate, represent, and show relationships with expressions and equations.
MA.3.2.1.a. Identify arithmetic patterns (including patterns in the addition or multiplication tables) using properties of operations.