Description Gitan Math B-1 (Revised Edition) — Includes both Korean and English Gitan Math B-2 (Revised Edition) · Understanding numbers up to 10 and writing numbers · Counting circles and writing numbers · Connecting matching numbers · Counting and marking O on the group with more · Filling in the blanks with the correct number Gitan Math B-3 (Revised Edition) · Understanding numbers up to 15 and writing numbers · Grouping by 10 · Counting circles and writing numbers · Filling in the blanks with the correct number · Understanding numbers up to 20 and writing numbers Gitan Math B-4 (Revised Edition) · Counting and writing the number of circles up to 20 · Number of circles (comprehensive review from 1 to 20) Gitan Math B-5 (Revised Edition) · Understanding and writing numbers up to 30 · Understanding and writing numbers up to 50 · Understanding and writing numbers up to 70 · Understanding and writing numbers up to 100 · Understanding and writing numbers up to 200