16 publication and printed matter, namely, books, booklets, workbooks, worksheets, activity books, handouts, articles, columns, circulars, pamphlets, brochures, newsletters, leaflets, informational flyers, letters and sheets, teaching materials, curriculum, curriculum templates, directories, teaching activity guides, posters, training manuals, training materials, guide books, instruction sheets, assessment sheets, questionnaires, developmental checklists, packaged kits composed primarily of printed instructional, educational, and teaching materials and also including an educational electronic or digital media, in the field of early childhood learning and development