A Teaching Resource BookBy Jerry D. Flack. These exciting, and mind-stretching activities illuminate a rich, interdisciplinary field of study. Investigating inventions of the past and the present, funny inventions, and inventions we may see in the future provides a natural springboard to creative thinking. Recommended books, films organizations, and other learning resources are noted throughout the text. Grades 7-9 (adaptable for many grades). Book, 148 pages.