For almost five years now Google has been stating that the old, “timeless” version of Google Sites would be closing “quickly.” It appears that they truly imply it this time. In an email to Google Workspaces domain administrators and in
this article, Google has revealed that on May 15th the ability to develop new websites using the old version of Google Sites will be removed. On December 1st modifying of sites made with the timeless variation of Google Sites will be handicapped. And on January 1, 2022 all sites made with the timeless variation of Google Sites will be offline..

Transition from Classic Google Sites to Current Google Sites.
Individuals who are still utilizing the timeless version of Google Sites can transition to the current variation of Google Sites by following the instructions in this video. It needs to be kept in mind that not all functions found in the traditional variation of Google Sites are offered in the present version of Google Sites..
Create a Website with Google Sites.
The current variation of Google Sites is much easier to use and more aesthetically pleasing than the timeless version. And there are some practical functions in the existing version that were not readily available in the timeless version.

Three Quick Ideas for Using Google Sites in Your Classroom.