Screencasting
According to Kathy Schrock (http://www.schrockguide.net/screencasting.html):
Screencasting is the capture all of the action on a computer screen while you are narrating. Screencasts can be made with many tools and are often used to create a tutorial or showcase student content mastery.
Teachers can record their own content/support materials (their own Kahn Academy videos). For the purpose of portfolios, students can record short videos illustrating mastery of specific outcomes/goals/standards and these videos can be embedded in an online portfolio. There are a variety of screencasting apps available for both iOS and Android.
iOS Apps for Screencasting
6 Useful iPad Apps for Creating Tutorials and Screencasts
http://www.educatorstechnology.com/2013/05/6-useful-ipad-apps-for-creating.html
Explain Everything ($2.99)
https://itunes.apple.com/us/app/explain-everything/id431493086?mt=8
Knowmia Teach
ShowMe Interactive Whiteboard
https://itunes.apple.com/us/app/showme-interactive-whiteboard/id445066279?mt=8
Educreations Interactive Whiteboard
https://itunes.apple.com/us/app/educreations-interactive-whiteboard/id478617061?ls=1&mt=8
Doodlecast Pro ($4.99)
https://itunes.apple.com/us/app/doodlecast-pro/id469486202?mt=8
PixnTell (free limited to 5 images, $.99 upgrade)
Android Apps for Screencasting:
Android screen recorders compared: http://recordable.mobi/compare
Screencast Video Recorder ($3.99) (free demo version available)
https://play.google.com/store/apps/details?id=com.ms.screencast&hl=en
SCR Screen Recorder Free
https://play.google.com/store/apps/details?id=com.iwobanas.screenrecorder.free&hl=en
Screen Recorder
https://play.google.com/store/apps/details?id=com.nll.screenrecorder&hl=en
Screen Recorder
https://play.google.com/store/apps/details?id=com.iscreenrecorder&hl=en
Screen Recorder (Ascrecorder)
https://play.google.com/store/apps/details?id=com.sylkat.Ascrecorder&hl=en
FREE screen recorder NO ROOT
https://play.google.com/store/apps/details?id=uk.org.invisibility.recordablefree
EASY screen recorder NO ROOT ($.99)
https://play.google.com/store/apps/details?id=uk.org.invisibility.recordable