Public Timelines

For educational institutions For teachers For students Cabinet

For educational institutions For teachers For students Open cabinet

FAQ Get premium

Create a timeline

Public timelines

About & Feedback Terms Privacy FAQ

Cabinet Get premium

Donate

jul 1, 1931 - The Overhead Projector

Description:

Was mainly used to instruct soldiers for WWII, but then was integrated into classrooms

Added to timeline:

Technology in Education Timeline

30 Nov 2017

0

0

528

Date:

jul 1, 1931

Now

~ 94 years ago

About & Feedback Terms Privacy FAQ

Cabinet Get premium

Donate

The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.

Secured with SSL