Note: Some machines diplay a message that the required codec is not installed.
You can find additional codecs here.

Lesson 31 Lesson 37
Lesson 32 Lesson 38
Lesson 33 and Lesson 34 Lesson 39
Lessons 35 Lesson 40
Lesson 36  

 

Lesson 41 Lesson 46
Lesson 42 Lesson 47
Lesson 43 Lesson 48
Lesson 44 Lesson 49
Lesson 45 Lesson 50