1. Music Academy, Ningbo University, Ningbo, People’s Republic of China
2. College of Teacher Education, Ningbo University, Ningbo, People’s Republic of China
3. Department of Mathematics, H. S. Skovoroda Kharkiv National Pedagogical University, Kharkiv, Ukraine
4. Department of General Pedagogy and Pedagogy of the Higher School, H. S. Skovoroda Kharkiv National Pedagogical University, Kharkiv, Ukraine