Screencasting involves capturing your screen and recording your voice at the same time.
There are thousands upon thousands of screencasts you can find online with people doing demonstrations of every imaginable idea. Great screencasts are focused, to-the-point, have clear audio and are NOT too long.
APPLICATION
Sure teachers can use them to record lectures and flip their classroom, but tasking the question "how could my students use this?" opens up some great ideas for getting students to record their understanding, work out a maths problem, make an argument, explain a concept... the ideas are endless. Getting students to do this and post on a class blog so others can see them gives them an authentic audience and great motivation to do a good job. My students screencasts have been amazing and they learn from each other - perfect!TOOLS
There are some amazing tools out there, many of them free, that allow you to create a screencast and share it in no time!These three are add-ons to the Chrome web browser:
Nimbus is wonderfully simple - no sign up, click of a button and easy to save your video or screenshot. You can save the videos then upload to YouTube or Google Drive for sharing.
Screencastify is also a Chrome add-on. There are limits to the recording time and you have to pay to remove the watermark.
Snagit is a great tool I have used to quickly capture and share screencasts.
Screencast-o-matic also works straight from any browser.
For iPad there are a LOT of apps that get the job done:
These tools do essentially the same thing, with slight variations. Explain Everything is a paid app but has the most functionality.
If you want to use software on a computer to do screencasts, Screenflow (Mac) and Camtasia are the gold standard. They are not cheap but give you professional features.