This book contains five research conducted by the author either as a teacher or as a student at Hebron University and schools. It has five units. In unit one, one can find the effects of immediate grammatical error correction on students. In unit two, readers find the commonest phonological errors made by Arabs when they produce English. In unit three, there is an essay about the importance of teaching grammar in the Arab world. In unit four, there is an essay about developing writing through reading, and in unit five, I have written a classroom observation in an English language class.