### Essentials of Algebra 1 - Day 2

Real Number System Subsets and Properties; Order of Operations; Variable Expressions

SOL 8.2 The student will describe orally and in writing the relationship between the subsets of the real number system.
SOL 8.4 The student will apply the order of operations to evaluate algebraic expressions for given replacement values of the variables.

Teacher Notes: Make sure to emphasize PEMDAS as 4 steps with multiplication and division as one step (from left to right) and addition and subtraction as another step (from left to right). Have students show each step and explain their reasoning

 Activity Warm-up Math Magic #2 Activities Integer"I Have...Who has..." activity (doc) Variables and Expressions Practice Review the order of operations and come up with a new and creative PEMDAS sentence as a group. Share answers with class. Vote on the class favorite. Order of operations worksheet (Punchline) Light Year Expression Riddle (pdf) Order of Operations Blackout Game Missing Signs Worksheet Mixed Up Tic-Tac-Toe (doc) - Use Operations Blackout Game Board Properties Review Properties Sort activity. Quick Properties Matching Technology Journal Order of Operations: Explain what is most important to understand about working problems using the order of operations. Wrap-up

Each class will include 40 minutes of breaks.  These times may vary with each site.