Zoom-Up Workbook Math, Z-kai’s math workbook for elementary school students, wins the 2020 National Parenting Product Awards in the United States
Z-kai to launch Math Workbook aimed at elementary students in the United States
Z-kai expands to North America by founding Z-kai USA Inc.
【Z-kai Inc.】Notice regarding selection for the Ministry of Economy, Trade and Industry’s “Project for Classrooms of the Future – Learning Innovation”
The University of Tokyo