2.
Presentation of New Information or Modeling:
10 min
Essential question:
o
Why is it important to follow the order of operations?
What is the correct order to solve equations using the order of operations?
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P = parenthesis
o
E = exponents
o
MD = multiplication and division (whichever is first from left to right)
o
AS = addition and subtraction (whichever is first from left to right)
Parentheses: parentheses are used in mathematical expressions to denote modifications to normal
order of operations (precedence rules).
3.
Guided Practice:
10 min
Write the following problem on the board: 4 + 5 × 3

Solve the equation using the wrong and correct way.Student A4 + 5 × 9 × 27Student B4 + 5 × 4 + 1519Ask questions from students to see if the can determine why there are two different answers to the same problem. Explain to them that the order of operations is very important in solving problems. Remind the children that multiplication and division have to be solved in order of what sign is first. The same thing with addition and subtraction.
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