Monday, March 30, 2015

OH.....I forgot my password.....!!!!


One of the most common operations done on any computer, tablet, mobile phone etc....is the use of passwords. How many times we hear a distress call from students and teachers…..oh I forgot my password! That means that the teacher/student has been locked out from any services offered by a particular website.

One used to write a password or two on a piece of paper. In many experiences the paper would get lost. Besides the problem of forgetting where that blessed paper is, one does not like the idea of writing so many passwords on a piece of paper. 

 

Is there a solution? Yes there is. We are of the opinion to use a password manager. The password manager keeps all your passwords in one place. One has to remember just one single password ie to open the password manager. One such manager is the Keepassx Manager. This is not an online manager where security is not 100%. This keeps the file with all the passwords on one's computer only. There is no other hidden file put online or somewhere else. The file cannot be opened by any other program.

The advantage is that one can take the file (with all the passwords) on a pendrive and use it on another computer (provided that keepassx is installed on that computer too).

Other advantages are: if you want a secure password and don't know how to create one, especially a very secure one, keepassx will generate one for you. Most people get annoyed writing a secure password because they would have to type it all over again every time they need to enter a particular website. Well with keepassx one can simply copy and paste! That's all.

Most people use names, phone numbers etc as passwords. For those who care about security they would opt for a more secure password where a mixture of numbers, letters, small and capital ones are used. An example would be:
sGkREqL8fP2cUSMfDv2jd9CAzWScowgDvrWgnkXFgBUuNtpMeHDnDh
How's that for security?! As one can see, keepassx can generate very secure passwords. One can generate a smaller password too.

Another tedious problem especially for teachers and students would be, if there is somebody behind my back who is overlooking what I'm doing, he/she might copy or remember my password!! With keepassx they just see a series of dots....so one does not need to worry at all. If you want to see more screenshots then go to this webpage.


Please remember that if you write your email address exactly at the top of this page, you will get an email every time we publish a new article. So why don't you write your email now?!

Sunday, March 15, 2015

Recording your Desktop


One of the most creative way of explaining things is to record your desktop i.e. the teacher wants to be very practical by showing the students a demonstration about the lesson. This is because the material found on the internet is too in general. The teacher knows his class, so he has to speak in a way that his students understand. The students, watching and listening to their own teacher explaining things may find it more user friendly. In other words, even if the teacher says the same things all over again, the fact that they see and hear their own teacher, works wonders! Recording your desktop gives a personal touch to teaching in this computer related era!

There is no expensive material involved, just a webcam, a microphone and a simple, free open source program which everybody knows about – VLC. As with other software, the teacher needs some time to practice and feel at home with this software. Maybe some soft music playing in the background would make it ideal for the students. Ideally for the teacher is to play some tutorials in order to feel more comfortable in using this software program. There are some You Tube tutorials as well.

Those using Linux, have a large variety such as: vokoscreen; wink; recordmydesktop; XvidCap; Istanbul; ffmpeg (mac/windows too); kazam

 

Sunday, March 1, 2015

Teachers Securing [Encrypting] their emails containing exam papers


It's not the first time that some students get hold of exam papers before actually sitting for exams!! Most teachers think about securing hard copies. But do they ever think about securing soft copies? Most teachers still don't know about cyber security. They still don't know how to make emails and documents safe from anyone who wishes to get in between the sender and the receiver!

Teachers do need to consult before submitting the last edit of an exam paper. They can't all be in the same room all the time, especially if they are preparing the exam papers at home. In many common cases they have some difficulties and maybe they wish to discuss a particular issue or some issues with another teacher.

Most people now use an online services for email, such as Yahoo/Google/Hotmail etc….Today we wish to help most of our readers in securing their mail services. Down below there are some links which should help them.

Link 1 (official help site of Mailvelope [the addon on Firefox and Chrome which adds Mailvelope to their browser)

Link 2 (video + some more explanation why people should encrypt their emails)

Monday, February 16, 2015

A free alternative to Office - LibreOffice



If you wish be informed every time there is an update to this blog, just write your email address at the top of the page. 


 One of the most used programs is surely 'Office'. Knowing that most students have financial difficulties to buy this and other programs, we offer a free and open source program – LibreOffice.

 LibreOffice (LO), does not only provide the same services but more. Have a look at the drawing features where it offers a program for drawing and not just a few features for drawing! See Illustration 2.

Mathematics teachers should be proud as they have their own program in LO too. Have a look at illustration 3.

I know what you're thinking….but all my friends use Microsoft Office. How can I work on the same files? Yes of course you can! When working in LO one can save in various formats and you can still read files of other programs such as office. See illustration 1.


Illustration 1

Illustration 2

Illustration 3




















Sunday, February 1, 2015

Saving your favourite websites (bookmarks)


Many teachers are busy preparing their lessons which includes bookmarking interesting educational sites. They never give a thought of copying all their material onto a pen drive or a portable hard disk. All of a sudden they see the blue screen of death or a virus on their laptops….and they start to panic when they realise that their work could disappear forever. Here we are giving some very easy steps to follow in order to copy the bookmarks found on your browser.
This should be an incentive to use free and open source programs which are able to stand up such threats especially in the life of a teacher where students are encouraged to share their presentations in front of the class. Consequently the threat of getting a virus is much higher than in the life of other people using the internet. 


Firefox

Go to bookmarks (top of the browser)
Show all bookmarks
Click on Import and Backup (very top)
Click on Backup...
Select where to put the file….
or you can use:
Export Bookmarks to HTML (I prefer this one!)

Chrome

In the top-right corner of the browser window, click the Chrome menu (you have sort of 4 horizontal lines)
Select Bookmarks,
then Bookmark Manager
Click on the Organize menu in the manager
Select Export bookmarks

How to Import

If you want to import them into another computer, then you only need to follow the same instructions for both browsers. This time, select import instead of export.

Sunday, January 25, 2015

Dual Boot: Having both Linux and Windows on the same computer!


Using a Linux Live DVD or Linux on a pendrive has its own advantages. But for obvious reasons one cannot have all the advantages! Hence for some people they might test it by installing it on their hard drive. Let me put it in a very simple way: Nobody is forcing you to install anything.

Linux users do not force you to install Linux but they do make you aware of choice. Most computer users have only seen one operating system and they are totally unaware of so many choices when it comes to computing!!

Secondly, it does not mean that you have to take away your windows section! You can dual boot so you can have both windows and linux installed on the same machine. That's our study for today. The advantage is that if you're using linux but you still feel that you should use your favourite programs, you can go to the windows section and work normally! So in that case you'll be using the best of two systems: Linux and Windows! In other words you're choosing what to use which is super fantastic!

Now obviously, where do you start? I shall first put a link for those who are using windows 7 (as it's more popular). The link is very user friendly as it has ample screenshots where it tells you what to do: step by step. Link 1

The following link is for those who are using windows 8. Link 2 In most cases, Windows 8 has what is called a secure boot, intended for rootkit viruses. Well you have to disable it in order to install Linux. Don't you worry. Here is an easy guide on how to do it Link 2B. Another feature which one should disable is the fast boot up. Just go to this link 2C to solve this challenge.

The last link is simply a repetition. It differs in one point only: installing Mint (Linux). Link 3

Sunday, January 11, 2015

Using a pendrive for trying out Linux !



Some laptops do not have an optical DVD read and write drive. Other ones do, but people get fed up with burning lots of DVD's. Whatever the reasons one might have, we have another solution. How about using a USB pen drive to try out Linux?

This will then allow you to have some practice with your new operating system (OS) before any changes take place on your pc!

Here comes the guide (other people have already asked for such help!) on how to use a bootable USB drive! This is the advantage of the Open Source, there is always somebody in another part of the world who has encountered the same challenge.

Guide1 This is a step by step guide using pictures. But if you still do need any other information, there are so many links to use, just in case you have any questions or difficulties. It's a compact website where everything is only a click away. As with a live DVD one has to first check the computer BIOS setting. This is the readable part which appears on the screen as soon as one fires up a pc. In the BIOS you have to make sure that your PC will boot up on the USB first and not on its hard-disk. There is some help in the previous posting about how to change the bios settings.

Guide2 This is a picture (screenshots) tutorial for those who feel a little bit more confident in hacking (personalizing) his PC, although it's quite straightforward and easy to understand.

Have fun!