16 Printed instructional, educational, and teaching materials in the field of preschool and early education; educational kits sold as a unit in the field of preschool and early education consisting primarily of printed curriculum manuals and handbooks, children's science journals, posters, picture cards, number cards, alphabet cards, puzzles, labels, stickers, pattern strips, and board games, and also including puppets, cube blocks, dice, and software games for instructional and educational purposes