I found many examples of grammatical errors and oversights in the text of the chapters. This includes typos, missing letters from words and misspellings as well. It does not appear that you had an Editing Phase in the development of the curriculum or least not a "final edit" task. I would encourage using individuals whose first or only language is English for this task. I will submit specific examples should I encounter them again. I wish I had kept a record of these during my first reading, but unfortunately, I do not have time to reread all of the text again.