Here are some powerful video screen capture tools you can use to record everything that takes place on your Chrome browser. Some of them support desktop recording allowing you to record your screen and not only tabs (e.g., Screencastify). As a teacher, you can use these web tools to create educational video tutorials, step-by-step guides, explainers, presentations and many more.
https://www.educatorstechnology.com/2018/10/some-very-good-video-recording-tools.html