Tool for using iPad as RealTime "Chalkboard" on MacOS?

Due to Covid-19 I'm holding my lectures as webinar from my iMac (WebEx, Zoom, ...). Meanwhile my setup works, but there is one thing I miss a lot: Drawing sketches in front of the class while I talk about it. Now, that I own an iPad + Pencil I'm looking for any Mac app that would allow me to - sketch on the iPad (simple, symbolic stuff, just like scribbles on a white board) - while talking on the conference software - see my drawing in a window on the Mac in (kind of...) real time (I can put on the shared screen of my conference software) Any ideas? [Edit: iMac 27“ 2020, iPad Air 4 (2020), Pencil 2)]