jan 1, 1923 - The radio was first used by Haaren High School in New York City in the classroom for teaching.
Description:
By Duncan Rawlinson (Flickr.com - image description page) [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons
Added to timeline:
A Brief History of Educational Technology
Date:
Images:
![]()
