Lori,
Web cams for computer are fairly inexpensive (~$25); you might want to check with your teacher to see if it's going to be required for other assignments in the course. If you have a mobile phone you should be able to record video with it and use the Canvas Student app to post the video that way to the discussion as well. The mobile guides are a little different for iPhones vs Androids so here is a link to the general help guides for both mobile platforms which might help https://community.canvaslms.com/docs/DOC-4048
Rick
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