Screencastify

My favorite A/V tool at the moment is Screencastify.  I use it mostly for short tutorials on new programs or apps that I think teachers should know about but don’t have time for a full professional learning session or PLC.  I also use it as a ‘spoonful of sugar’ to convey abundant information instead of putting it in a lengthy email.  I love that SC has released an upgrade that allows teachers to assign video responses in Google Classroom.  I often ask the TECHsperts to create and submit a screencastify that teaches younger students how to use a digital tool, like different features in Seesaw for example.  Many of the younger teachers on my campus prefer Loom, but i don't see enough of a difference in the two to switch.  
For longer informative videos I use Filmora Wondershare - it is cheaper than Camtasia and (I think) more user friendly. 
I enjoyed the article Popular Culture in the Classroom, as it reinforced the idea of technology as an enhancement, not a replacement, for traditional learning.  It is an older article and digital learning has come a long way since 2006, but the concept still holds true - using audio & video, and let’s add gaming to that list, does motivate students and capture their attention by making learning relevant to them. 
Popular Culture in the Classroom (2006)