What is this piece of early technology? How was it used?
TechTrends - 2007
Tóm tắt
Từ khóa
Tài liệu tham khảo
Johnson, W. (2006). The Spencer Delineascope. AECT Archives Paper. DeKalb, Illinois: ETT 640, Northern Illinois University.
Lee and Lida Cochran AECT Archives. (1999). Delineascope. DeKalb, Illinois: Blackwell Museum of Education, Northern Illinois University. Retrieved February 1, 2007 from http://www.cedu.niu. edu/blackwell/multimedia/high/library.html