Content and language integrated learning is one out of the bilingual methods that has been frequently discussed by language teachers, researchers and scholars for the last decade in Slovak educational environment. Mostly they are positive about the benefits CLIL offers for learners and they study both results in language and subject achievement; moreover, they investigate its impact on teachers' competencies and feasible integration of language and content. The article outlines general

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... n of the CLIL term; illustrates its benefits and drawbacks; discusses the competencies of a CLIL teacher; deals with an issue of materials and takes closer look at integration of English language and Mathematics teaching.