Consumable.
Singapore Primary Math 4B Workbook should be used in conjunction with the Singapore Primary Math 4B Textbook. This workbook provides the practice essential to skill mastery and the included exercises should be done by the student independently. A variety of exercises are presented, from pictorial to abstract. This workbook is included in the Singapore 4 Math Program.
If you have not used Singapore Math® before please go to Singapore Math® Overview for a complete description, samples, placement guide, and a placement test.