Nina Liu

Zhongguo cheng xiang lao nian ren sheng huo zhuang kuang diao cha bao gao (2018)

Organizing and Collecting: The Number System (Contexts in Learning Mathematics, Grades K-3: Investigating Number Sense, Addition, and Subtraction)

The Double-Decker Bus: Early Addition and Subtraction (Contexts for Learning Mathematics, Grade K-3: Investigating Number Sense, Addition, and Subtraction)