1, "Daily Practice of Oral Calculations" series: This textbook is classified according to grades and semesters. Rich in content and diverse in questions. It is suitable for students to consolidate classroom knowledge and improve their verbal skills every day.

2. The King of Pupils' Oral Calculation Series: This series focuses on strengthening pupils' oral calculation, mental calculation and quick calculation ability, and adopts a step-by-step arrangement with increasing difficulty to help students improve the calculation speed and accuracy step by step.

3. Learning while thinking about oral English: Learning while thinking is a well-known educational brand, and its oral English teaching materials combine online and offline educational resources, including online interactive exercises and offline paper teaching materials, focusing on the combination of interest and practicality.