We used this up to lesson 3.3A, so the first 3 weeks, or 20 pages of the student workbook are not included. There are copies of these work pages in the instructors guide under each week’s answer key so you can recreate the missing pages if desired. And the majority of each week’s lessons are the plans that are listed in the instructors book, the worksheets were only a small part of the daily lessons. Instructor guide has dates written on the first 3 weeks of lessons. No other marks in either book. The tangram black line master was removed and assembled as per the instructions and all pieces will be included - I saved you the time and hassle of cutting, coloring and laminating all those tiny pieces! This curriculum just didn’t work for us, but many people love it!