Lesson: You owe me!

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Lesson Objective

SWBAT graphically represent and find solutions to integer addition & subtraction problems.

Lesson Plan

Anticipatory Set

Give students set of fake money. Ask them to create the numbers you write on the board. Write compound amounts on the board such as 37, 85, 19. Discuss the differences in strategies ("this group used a ten and nine ones, but that group used a ten, a five and four ones. Is either group wrong?")

Input                                          
Tell students that all math can be thought of as money math, and that they probably know answers faster if they think that way.


Guided Practice or Coaching + Checking for understanding

 Students shout out answers and fill in blanks on worksheet translating integer problems into money scenarios. For example, -10 + 5 is written out as "I owe Yohana ten dollars, and I have five dollars to pay her with."


Independent Practice or Assignment

Students continue to the end of the worksheet, then, in groups, start back at the beginning and decide on the solution to each problem. (Suddenly, students are much better at mental math!)

Groups can use the fake money on their tables to work it out if there is confusion or disagreement.

 

Assessment/Evaluation + Closure

Ask a student to invent a situation where they owe something and/or have something. The class translates what the student says into an integer problem and solves it.

Exit ticket is an integer problem the students translate then solve.

Lesson Resources

ALL NUMBERS ARE MONEY overhead   Classwork
166
ALL NUMBERS ARE MONEY   Classwork
259

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