Lesson Plan GEMDAS: Order of Operations
Learning Objectives Students will evaluate expressions with parentheses, brackets, or braces in numerical expressions.
Introduction (5 minutes)
Review PEMDAS as an acronym for order of operations.
Write an expression on the board that includes parenthesis only. Example: 60 – 4 x (7 -2) + 23 + 32
Discuss the rules that must be followed and evaluate the expression.
Rewrite the expression on the board.
Explain to students that brackets, braces, and other symbols are often used in mathematical expressions as well.
Have students insert other grouping symbols to this expression.
Discuss the similarities and differences in the problems.
Explain that in today’s lesson, they will use a new and more accurate acronym, GEMDAS, to solve problems that have grouping symbols.