[OS X TeX] Best iPad PDF viewer for math?

Nicolae Garleanu garleanu at berkeley.edu
Sat Aug 22 11:34:26 EDT 2020

Hi Gary,

Could I ask in which app you open the document on the iPad that you share via HDMI cable? And do you sometimes write on this document (pdf, I assume) during the presentation?

Here is what I know. Using Goodnotes, if I connect via Airplay — that is, share screen in Zoom by choosing "iPad via Airplay” — then Goodnotes enters presentation mode and I can choose the option that I like among the three (I like “mirror full page,” which hides the interface and has nice page transitions). However, if I connect via cable (USB-C, not HDMI), then I am just sharing the full screen of the iPad, which is nowhere near as nice. I would like the safety of a wired iPad-macbook connection, but Goodnotes with Airplay is quite a bit better than simply sharing the screen.

On the recording note: In the spring I taught by logging in (using the same ID) from desktop computer (for video/audio and to monitor chats etc) and MS Surface (for slides; this screen almost always shared). What I saw of the recordings seemed fine. Furthermore, no student raised any issue. We also have a dedicated staff member that was logged on to make sure that technology worked (e.g., that I had restarted recording once I paused it for the break); he mentioned at some point that the recordings were fine (he checks them before posting for the students).  Ross’s issue may be specific to institutional set-up, etc. I haven’t tried this with an iPad yet, hadn’t realized it could be problematic. At least it is easy to check, by running a brief meeting by myself whenever and viewing the recording a couple of minutes later.


On Aug 22, 2020, at 5:32 AM, Gray, Gary L <euler at psu.edu> wrote:

> On Aug 21, 2020, at 7:39 PM, Ross Moore <ross.moore at mq.edu.au <mailto:ross.moore at mq.edu.au>> wrote:
> Using an HDMI cable, I share the iPad screen, to be shown in a Zoom session run from my laptop.
> Zoom can be run from the iPad itself, but the restriction to a single window/screen at a time makes that rather 
> clunky to control allowing students to join, and monitoring Chat contents, etc., at the same time as delivering 
> a lecture or tutorial class.

I learned just a couple of weeks ago that you can do this and it works *very* well. This can also be done wirelessly using AirPlay if both devices are on the same WiFi network.

> On the other hand, I have frequently joined a Zoom session with the iPad as co-Host, giving a way to
> both see what students are seeing, and have the ability to share the iPad’s screen directly as a
> separate Zoom participant.

This is what I did in the spring after we went online. It also *seemed* to work well. See below.

> (There is an issue, however, with Cloud recordings when there are 2 instances of the same login address.
>  Recording onto the local computer seems to be fine, though.)

What issue are you seeing with cloud recordings in this mode? I did notice that my cloud recordings were very low resolution when done this way and were much higher resolution when I shared my iPad screen when it's connected to my Mac.

Classes start Monday and I am still working out all the technology details.

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