I am a maths teacher and have to teach my students over video in this lock down. Now all I want for them is to view expression and equations. I aim to achieve this by sharing my screen and using some sort of LaTex editor that is able to display the results on the go. I know there are some online tools. But is there any such application native to linux. I do not wish to build complex documents using this editor. Just some sort of split view where my latex will turn into expressions live as I type or after each statement.
SnapOverflow
the closest to that wysiwyg that you want is Lyx. Check it out, in youtube
https://www.youtube.com/watch?v=JiDFyIuloy4
you find some tutorial so you can get the feeling of it. I am using a drawing app (Miro) for maths in a "whiteboard" in android, I share that app from my tablet and use the PC for audio and presentations.