CENTUM

Printed publications, namely, periodicals, textbooks, books, and journals on the subject of math education; sticker activity books, sticker albums, coloring books and children's activity books; calendars; diaries; notebooks

Publication of books, textbooks, magazines, journals, sticker activity books, sticker albums, coloring books, activity books, posters comprising printed educational material for instructional purposes, quiz books, calendars, diaries, and notebooks; publication and written text editing of printed matter and printed publications, namely, periodicals, texts, textbooks, journals, sticker activity books, sticker albums, coloring books, activity books, calendars, diaries and notebooks; providing on-line electronic publications in the nature of e-books, e-textbooks, e-magazines, e-journals, e-sticker activity books, e-sticker albums, e-coloring books, e-activity books, e-posters, e-quiz books, e-calendars, e-diaries, and e-notebooks in the field of math education from the Internet