SUPPLEMENTAL WORKBOOK: Multiple copy student workbook discounts as low as $5.00/ea. Contact Dave at dbtick@aol.com Focusing on a practical and analytical approach to writing, this supplemental book to EZCOMMA provides a simple and logical way to structure, combine and organize sentences with the correct punctuation. The "codes" method will improve clarity of expression while creating a more sophisticated writing style. In addition, there are many suggestions and assignments that focus on common errors, spelling, vocabulary, and reading comprehension.