Top 100 Languages by Population. These are the top 100 languages in order of number of first language speakers. This is from the 13th Edition of the Ethnologue (1996). More up-to-date information may well be avaliable. www.ethnologue.com is by far, the best language resource I've found on the web and much more detailed information about individual languages is avaliable there.
exploratory. 1  pertaining to or concerned with exploration: an exploratory operation. 2  inclined to make explorations.
The purpose of Exploratory Courses is to provide middle school students the opportunity to engage in a variety of subjects outside of their everyday class schedule in a way that sparks curiosity and prepares students to make personal learning choices so that students develop passion for learning early on in life.