Designed in an engaging comic-book style format, our Level 4 curriculum includes the Guide books and Practice books for all four units (4A, 4B, 4C, 4D).
- The Guide book is a full-color paperback textbook, which teaches concepts in a comic-book style.
- The Practice book complements the Guide book and includes 300+ problems ranging from introductory-level exercises to challenging puzzles and word problems.
