Lecture 10.19.10
Unit 1 lesson 2
Unit 1 lesson 5
Unit 5 lesson 1
Unit 10 lesson 1
Lecture 9.28.10
Unit 6 lesson 1
Unit 4 lesson 1
Lecture 10.12.10
Unit 3 lesson 1 version 2
Unit 2 lesson 1
Lecture 10.5.10
Lecture 9.14.10
Lecture 9.7.10
Unit 6 lesson 2
Unit 2 lesson 2
Unit 1 lesson 1
Unit 8 lesson 1
Unit 9 lesson 1
Lecture 9.21.10