Lesson

A lesson is a structured period of time where learning is intended to occur. It involves one or more students (also called pupils or learners in some circumstances) being taught by a teacher or instructor. A lesson may be either one section of a textbook (which, apart from the printed page, can also include multimedia) or, more frequently, a short period of time during which learners are taught about a particular subject or taught how to perform a particular activity. Lessons are generally taught in a classroom but may instead take place in a situated learning environment.

In a wider sense, a lesson is an insight gained by a learner into previously unfamiliar subject-matter. Such a lesson can be either planned or accidental, enjoyable or painful. The colloquial phrase "to teach someone a lesson", means to punish or scold a person for a mistake they have made in order to ensure that they do not make the same mistake again.

Lessons can also be made entertaining. When the term education is combined with entertainment, the term edutainment is coined.

Arabic

Arabic (/ˈærəbɪk/;Arabic: العَرَبِية‎, al-ʻarabiyyah [alʕaraˈbijja] or Arabic: عربي ,عربى‎ ʻarabī [ˈʕarabiː]) is the Classical Arabic language of the 6th century and its modern descendants excluding Maltese. Arabic is spoken in a wide arc stretching across Western Asia, North Africa, and the Horn of Africa. Arabic belongs to the Afroasiatic family.

The literary language, called Modern Standard Arabic or Literary Arabic, is the only official form of Arabic. It is used in most written documents as well as in formal spoken occasions, such as lectures and news broadcasts.

Arabic is a Central Semitic language, closely related to Aramaic, Hebrew, Ugaritic and Phoenician. Standard Arabic is distinct from and more conservative than all of the spoken varieties, and the two exist in a state known as diglossia, used side-by-side for different societal functions.

Some of the spoken varieties are mutually unintelligible, both written and orally, and the varieties as a whole constitute a sociolinguistic language. This means that on purely linguistic grounds they would likely be considered to constitute more than one language, but are commonly grouped together as a single language for political or religious reasons (see below). If considered multiple languages, it is unclear how many languages there would be, as the spoken varieties form a dialect chain with no clear boundaries. If Arabic is considered a single language, it is perhaps spoken by as many as 422 million speakers (native and non-native) in the Arab world, making it one of the six most-spoken languages in the world. If considered separate languages, the most-spoken variety would most likely be Egyptian Arabic with 89 million native speakers—still greater than any other Afroasiatic language. Arabic also is a liturgical language of 1.6 billion Muslims. It is one of six official languages of the United Nations.