33
/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
November 1, 2025
3839962
353562
2
Create a timeline
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
FAQ
About & FeedbackTermsPrivacyFAQ
Support 24/7  
CabinetGet premium
Donate

jan 1, 1930 - Overhead Projector

Description:

A projector that was originally used by the U.S. military for training purposes was then distributed to schools for visual aides that can be seen by all students in the classroom.

Added to timeline:

Education Timeline- EDU221

ByBrookley Buchanan
9 Mar 2020
0
0
274

Date:

jan 1, 1930
Now
~ 95 years ago
About & FeedbackTermsPrivacyFAQ
Support 24/7  
CabinetGet premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL