Lesson 1 Cafeteria Actions and Reactions
Lesson 2 Elvira’s Equations
Lesson 3 Solving Equations Literally
Lesson 4 Greater Than?
Lesson 5 May I Have More, Please?
Lesson 6 Taking Sides
Lesson 7 More or Less Absolute
Lesson 8 Cafeteria Consumption and Cost
Lesson 9 Eating Up the Lunchroom Budget
Lesson 10 The Arithmetic of Matrices