Flipped learning and second language acquisition

Description

 It would be: 1- Shift from teacher-centered to student-centered learning Needed (400 words) 2- Blended learning approach Needed (400 words) 3- Flipped learning definition Needed (200 word) 4- Empirical studies to flipped classroom in second language acquisition Needed (1200 words) it would be better if you can divided it between the four skills of language ( waiting, listing, reading and speaking) 5- The importance of technology in learning language Needed (300 words)