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Screencastify - if you have not already seen it....

Screencastify is a Chrome extension that allows you to record the content of one tab - so video and either the audio from your mic or the tab. Its particularly useful on a Chromebook as the only other way of recording the screen is to use a Hangout on Air. Hangout's on Air do allow you to record the whole screen - not just the active tab and in my experience give better results. However, you can only do them if you are 18 and this app can be used more easily by students.

Videos can be downloaded locally or directly sent to YouTube. I've tried doing them on my Pixel (see video), a Toshiba Chromebook and a Samsung Series 3. The Series 3 produced choppy video and audio unless I dialled the capture resolution right down. The other two Chromebooks and my PC worked fine at any resolution. So it needs a little bit of grunt to work well. If I wanted to screencast on a Series 3, I'd stick to a Hangout on Air.

This is the results from my Pixel:

Just a bit of an update - there is an option to record the full screen - you need to turn on a Chrome flag for this to work - but it helpfully points you towards the right one. Tried this on my Windows 8.1 PC and it recorded a video - but seemed to lock the screen so I could not do anything. However, tried the same thing on my Pixel and it worked fine. The result of my experiment is below:

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Delete a specific email using GAM

If a user send an inappropriate email to a loads of people or get stung by some sort of email exploit you can quickly delete the email from all of the recipients using a GAM command.
Step 1 - get the email header Go into Google Vault and search for the offending user or someone known to have got the message.
Click show details and grab the email ID. This will be a long string of characters followed by
Step 2 - find out who has the email Go into Google Vault and find the original message sent by the offending user. Look at the details to see who got it. Copy the list and dump it into a spreadsheet. Clean up to just a list of emails with a column header 'mail'. Save as a csv file.
Step 3 - delete messages with GAM Put your CSV file in your GAM folder - this e.g. assumes its called mail.csv
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The alternative nuke option is:
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My favorite GAM commands - well a few of them at least!

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Classroom Create a spreadsheet of all your domains classes - gam print courses todrive

Create a spreadsheet of a teacher's classes: gam print courses teacher todrive

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where classes.csv is a list of classes you want to make.

Add teachers:
gam csv teachers.csv gam course ~alias add teacher ~teacher

Add students:
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How to push bookmarks to users in Chrome via the management console

With the release of Chrome and ChomeOS 37 an update to the management console has arrived that allows you to push bookmarks to users.

Under Device Management > Chrome > User Settings > User Experience you will now find the option to add managed bookmarks.

In the example above, the bookmarks are applied to the sub-OU of 'students' - so all our students will get these bookmarks. Simply add your url and the bookmark name, click the + and save. These will appear in a folder called 'yourdomain bookmarks' - see below:

Be aware that to get these bookmarks applied on a Windows/OS-X device the user must be signed into Chrome. Update: if you install the latest group policy template you can push the bookmarks via policy on PCs - details are given here.
Video Guide: