Lesson 1-3

• Lesson 1-3 Problem 2
• Lesson 1-3 Problem 4

Lesson 1-4

• Lesson 1-4 problem 1
• Lesson 1-4 Problem 4

Lesson 1-5

• Lesson 1-5 Problem 3
• Lesson 1-5 Problem 4

Lesson 1-6

• Lesson 1-6 Problem 2
• Lesson 1-6 problem 4

Lesson 1-7

• Lesson 1-7 Problem 1
• Lesson 1-7 Problem 3

Lesson 1-8

• Lesson 1-8 Problem 2 and Got It #2
• Lesson 1-8 Problem 4

Lesson 2-1

• Lesson 2-1 Problem 4 and Got It #4
• Lesson 2-1 Problem 5 and Got It #5

Lesson 2-2

• Lesson 2-2 Problem 1 and Got It #1
• Lesson 2-2 Problem 2 and Got It #2

Lesson 2-3

• Lesson 2-3 Problem 1 and Got It #1
• Lesson 2-3 Problem 2 and Got It #2

Lesson 2-4

• Lesson 2-4 Problem 1 and Got It #1
• Lesson 2-4 Problem 2 and Got It #2

Lesson 2-5

• Lesson 2-5 Problem 2 and Got It #2
• Lesson 2-5 Problem 3 and Got It#3

Lesson 3-1

• Lesson 3-1 Problem 1 and Got It #1
• Lesson 3-1 Problem 2 and Got It #2

Lesson 3-2

• Lesson 3-2 Problem 1 and Got It #1
• Lesson 3-2 Problem 3 and Got It #3

Lesson 3-3

• Lesson 3-3 Problem 3 and Got It #3
• Lesson 3-3 Problem 4 and Got It #4

Lesson 3-5

• Lesson 3-5 Problem 1 and Got It #1
• Lesson 3-5 Problem 2 and Got It #2

Lesson 6-1

• Lesson 6-1 Problem 1
• Lesson 6-1 Problem 2
• Lesson 6-1 Problem 3
• Lesson 6-1 Problem 4

Lesson 6-2

• Lesson 6-2 Problem 1
• Lesson 6-2 Problem 2
• Lesson 6-2 Problem 3
• Lesson 6-2 Problem 4

Lesson 6-3

• Lesson 6-3 Problem 1
• Lesson 6-3 Problem 2

Lesson 6-4

• Lesson 6-4 Problem 2
• Lesson 6-4 Problem 3

Lesson 6-5

• Lesson 6-5 Problem 2

Lesson 6-6

• Lesson 6-6 Problem 1
• Lesson 6-6 Problem 2
• Lesson 6-6 Problem 3
• Lesson 6-6 Problem 4