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Lesson 1 Cafeteria Actions and Reactions
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Lesson 2 Elvira’s Equations
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Lesson 3 Solving Equations Literally
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Lesson 4 Greater Than?
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Lesson 5 May I Have More, Please?
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Lesson 6 Taking Sides
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Lesson 7 Cafeteria Consumption and Cost
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Lesson 8 Eating Up the Lunchroom Budget
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Lesson 9 The Arithmetic of Matrices