PhET is an excellent resource that Ive shared a bunch of times for many years. Recently, I was looking through the website when I saw that its
activity search tool now consists of a filter for remote activities. Through this search tool you can locate lesson plans developed for remote instruction and learning. You can combine the remote search filter with any of the other subject, level, and language search filters.
View this brief video to see how it works..

More About PhET.
In the following video I show how to include PhETs science and math simulations in your Google Site. Those of you who enjoy the video will likewise see that the simulations can also be shared via a direct Google Classroom integration.

Lots of the PhET simulations are offered to insert into PowerPoint discussions through using.
PhETs free PowerPoint Add-in. With the Add-in installed you can browse the offered simulations and insert them into your slides. The simulations work in your slide simply as they do on the PhET site.