Welcome to bjohas.de — open, education, technology

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Welcome to my website - open resources, teacher education, technology, and other interests.

This is my personal website, so while some of the items here related to my work, much of it does not. On the whole, you'll find things about education, open access, digital technology and ICT, as well as about media, maths and science, across primary, secondary and higher education, both in European, African, and global contexts. If you dig for long enough, you'll also find things about music, languages, and archaeology.

 

Blog post: 20170725 Saving mobile data

Saving mobile data

Just back from Zambia. On the SPAKA bundles you can get (on MTN) there is a good minutes allowance, but not a lot of data (e.g. 50 MB). Similarly, on Emirates, you get 20 MB of WiFi free. So how do you make that go as far as possible?

Install a firewall, and disable all apps, except the ones you really need, such as mail, your messenger app, and maybe a browser. Two firewalls:

Also, use a browser that has bandwidth compression built in, e.g.

(You may want to use the same browser on your desktop, so that your passwords are automatically shared.)

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Featured video: 21st Century Learning in Zambia