You can share your screen in Panopto or Zoom live or recorded. There are many drawing programs available to you depending on the type of device you are using. A Microsoft Surface or other Tablet type computers are ideal because you can use a stylus to write rather than a mouse.
Microsoft Office comes with drawing tools. If you are using PowerPoint, you can prepare a slide with some data and use the drawing tools to highlight your text.
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If you are recording, see start your recording for step by step instructions or review how to live stream in Panopto -
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Once your recording is started, you can minimize your Panopto recorder then open the programs that you wish to share with your audience.
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OR see how to record a meeting in Zoom.
Use your Smart Phone
You or your students can use smart phones to take a picture or video of a written document and post. You can then add the image to a slide show and use the ink tools to highlight information. You can also set your camera on a tall empty drinking glass, join your own zoom session anonymously from your phone, share you screen and record yourself writing. remember to turn off mic and speakers on one device to avoid feedback.
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MS Office Ink is fully integrated with all MS Office apps: https://support.office.com/en-us/article/draw-and-write-with-ink-in-office-6d76c674-7f4b-414d-b67f-b3ffef6ccf53
EquatIO
EquatIO is a math extension that allows you to insert, edit, and interact with digital math in the G Suite Environment or with Microsoft word.
https://support.texthelp.com/help/getting-started-with-equatio
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