Take your lesson [July 11, 2012, 11:47 a.m.]
[stub] Open a new window and load your page as a student would see it. Take the lesson yourself, it should be easy for you :), and look for any rough edges. ARe all the elements you wanted to introduce or explain properly introduced and explained? Do you feel like you introduce new material at a good pace? Does the lesson cover all the material you want? Look for typos or missing punctuation.