Provide hands-on activities for practice and mastery. Check for understanding of concepts and skills by using relevant standard materials, i.e. worksheets, text problems, workbooks, teacher prepared exercises, etc.

Student teams portray properties; worksheets and guided practice.

Objective: To reinforce student understanding of algebraic properties.

Activity: 1. Divide class into two teams. Each team has a colored set of cards consisting of the following: 2 "a"; 2 "b"; 2 "c"; 3 "="; 2 "+"; 2 "-"; 2 "("; 2 ")"; 1 "if"; 1 "and"; 1 "then"; 2 "ï". As a property is called out by the teacher, teams must assemble to form an algebraic sentence that shows the property. A designated team member raises her hand when the team is ready. Teams face one another and cross correct their sentences. A point system is established for scoring each team's efforts. 2. Students will complete worksheets with arithmetic problems as well as algebraic proofs. They must supply the reasoning for each step in 2-column formal form.

Assessment: Student ability to demonstrate algebraic properties; completion and correctness of assigned work.