Reading 1a and 1b
If you want to read more about motivation and language learning, I recommend:

1. chapter 6 of M Williams and R Burden (1997) Psychology for Language Teachers, Cambridge University Press, Cambridge, 1997, pp 111-42;
   
2. the short, but useful, account in P Lightbown and N Spada (1999) How Languages are Learned, 2^nd edition, Oxford University Press, Oxford, pp 56-58.

Reading 2
You can find our more about theories of second language learning in

1. Lightbown, P and Spada, N (1999) How Languages are Learned, 2^nd edition, Oxford University Press, Oxford, chapter 2, pp 31-48;
   or, for an in-depth discussion, see
2. Skehan, P (1998) A Cognitive Approach to Language Learning, Oxford University Press, Oxford, especially chapters 4, 5 and 6.

Reading 3
If you have a copy of Jane Willis's book A Framework for Task-based Learning (1996) I recommend that you now read chapter 1, pages 3-21, to revise and consolidate the material in this activity cycle.