"Minna ga Hoshikatta! Denken Sanshu: Kikai no Kyokasho & Mondai-shu" (Everyone Wanted! Third Class Electrician: Machinery Textbook & Workbook) TAC Publishing Development Group Price: ¥3000 The textbook and workbook are separated from the main body. There are writings on the workbook as shown in the second photo, on the learning days.