TechWhirl (TECHWR-L) is a resource for technical writing and technical communications professionals of all experience levels and in all industries to share their experiences and acquire information.
For two decades, technical communicators have turned to TechWhirl to ask and answer questions about the always-changing world of technical communications, such as tools, skills, career paths, methodologies, and emerging industries. The TechWhirl Archives and magazine, created for, by and about technical writers, offer a wealth of knowledge to everyone with an interest in any aspect of technical communications.
On Thursday, May 28, you asked for help in finding an original source to
quote as "XXX (=visuals; multimedia; video...> can increase learning
retention:"10% of what we read
20% of what we hear
30% of what we see
50% of what we hear and see
70% of what we say and write
90% of what we say and do"
The above quote was adapted from Edgar Dale's "Cone of Experience"--it
appeared in _Educational Media_ by Winman & Meierhenry and was published
by Charles Merrill in 1969.