sentences:  and how English is used in core content classes, they started to implement various approaches such as Sheltered instruction and learning to learn in CBI classes.Sheltered instruction is more of a teacher-driven approach that puts the responsibility on the teachers' shoulders.This is the case by stressing several pedagogical needs to help learners achieve their goals, such as teachers having knowledge of the subject matter, knowledge of instructional strategies to comprehensible and accessible content, knowledge of L2 learning processes and the ability to assess cognitive, linguistic and social strategies that students use to assure content comprehension while promoting English academic development.