Work cat.: C&O Canal Junior Ranger activity book, [2010?].

The web of life activity booklet, [1994].

Reitz, J.M. ODLIS : online dictionary for library and information science, Apr. 3, 2017: (activity book: A book designed to engage the user in a pursuit other than (or in addition to) reading, for example, an instruction manual for science or craft projects, or a volume containing puzzles or word games)

Amazon website, Apr. 3, 2017: (menu selection: Departments -- Books & Audible -- Children's books -- Activities, crafts & games -- Activity books)

Genre terms : a thesaurus for use in rare book and special collections cataloging, via WWW, Apr. 3, 2017.

Works that consist wholly or chiefly of puzzles, word games, coloring pages, instructions for simple science or craft projects, etc.