kids and teenager are sleepy at school because the electronic media they have in their bedrooms leads them to have delayed sleep phase disorder (dspd)

bserved by many teachers that most of the time, mumbling and searching for their intended words, students complain why they have forgotten the words they have learned in the previous semesters. they ask for some new ways that may help them to recall and apply the learned words more efficiently, since as they declare one of the most important skills in foreign language learning is having a good command of vocabulary knowledge. it is claimed that nobody is able to communicate in a second language without having an acceptable knowledge of vocabulary. nation (2001) for example, suggests that a native speaker of english knows about 20,000 word families. this poses a challenging task for esl or efl learners. even “formal transformationalgenerative linguistics which previously took syntax as the primary focus, now gives more central attention to the lexicon…. even chomsky, the father of contemporary studies in syntax, has adopted a "lexicon is prime position.” (richards and rogers, 2001,