Screencastify
Screencastify is a simple video screen capture software for Chrome. Just press record and the content of your tab, webcam or desktop is recorded. Easily create screencasts for video tutorials, record presentations etc. Screencastify does not depend on any plugins (like Java, Flash or others), so it runs on all platforms that run Chrome (Linux, Windows, OS X) or ChromeOS (Chromebooks and Chromeboxes).
Read: Screencastify for Classrooms
Read: Screencastify User Guide
Visit Screencastify on the Chome Web Store to get started.