Unit 4

Puzzle Problems

• Lesson 1

  Number Puzzles

Linear Equations in One Variable

• Lesson 2

  Keeping the Equation Balanced

• Lesson 3

  Balanced Moves

• Lesson 4

  More Balanced Moves

• Lesson 5

  Solving Any Linear Equation

• Lesson 6

  Strategic Solving

• Lesson 7

  All, Some, or No Solutions

• Lesson 8

  How Many Solutions?

• Lesson 9

  When Are They the Same?

Systems of Linear Equations

• Lesson 10

  On or Off the Line?

• Lesson 11

  On Both of the Lines

• Lesson 12

  Systems of Equations

• Lesson 13

  Solving Systems of Equations

• Lesson 14

  Solving More Systems

• Lesson 15

  Writing Systems of Equations

Let's Put It to Work

• Lesson 16

  Solving Problems with Systems of Equations