My Educational Articles

Total instruction time in compulsory education in European schools (map)
Primary and lower secondary education is compulsory in all European countries (with the exception of Vatican City), but there are huge (...)
September 30, 2015 – Jakub MarianMaps
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Is ‘that’ always restrictive and ‘which’ non-restrictive?
There are two basic types of subordinate (dependent) clauses in English. A clause is called non-restrictive if it adds only parenthetical (...)
September 20, 2015 – Jakub MarianEnglish
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Difference between ‘electronic’, ‘electric’, and ‘electrical’
The meanings of “electric”, “electrical”, and “electronic” often overlap, but the three adjectives are not completely interchangeable. The (...)
September 6, 2015 – Jakub MarianEnglish
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Comma before ‘because’ in English
“Because” introduces a dependent clause that almost always contains essential information (the whole sentence would sound incomplete (...)
August 31, 2015 – Jakub MarianEnglish
Ukrainian immigration in Europe (map)
Today’s map shows the percentages of residents of European countries who were born in Ukraine (that is, first-generation immigrants of (...)
August 26, 2015 – Jakub MarianMaps

By the way, have you already seen my brand new web app for non-native speakers of English? It's based on reading texts and learning by having all meanings, pronunciations, grammar forms etc. easily accessible. It looks like this:

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Comma before ‘and’, ‘but’, ‘so’, etc., between independent clauses
Most languages don’t require a comma before “and” when it joins two independent clauses, but writing a comma before “but”, (...)
August 24, 2015 – Jakub MarianEnglish
Average Internet connection speed by country in Europe
Akamai, a huge content delivery network (CDN), regularly publishes statistical data on various aspects of Internet connection in the (...)
August 19, 2015 – Jakub MarianMaps
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‘I feel myself good’ and ‘I feel myself well’ in English
A common error among beginning English speakers is to say “I feel myself” instead of “I feel”, which is understandable because this is the (...)
August 16, 2015 – Jakub MarianEnglish
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‘He wents’ vs. ‘he went’ in English
English is a very simple language when it comes to the past tense. Every verb in English (apart from “to be”) has only one simple past (...)
August 16, 2015 – Jakub MarianEnglish
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Comma before ‘whereas’, ‘while’, and ‘although’
Should you precede a subordinate clause with a comma? This depends on whether the subordinate clause contains essential information that (...)
August 9, 2015 – Jakub MarianEnglish