There are persons who may be interested in teaching online, and may not know exactly what helpful tool to use. One tool I would recommend is Screen-cast O-Matic. Screen-cast-O-Matic allows persons to record their computer screen, and persons can add their own voices as well, while recording their computer screen in the free version.
I found the following video that talks about Screencast-O-matic
I found the following video that talks about Screencast-O-matic
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