Improving the effectiveness of english lessons of grade 3, 4 through warm up section at thi tran primary school THANH HOA EDUCATION AND TRAINING DEPARTMENT NGA SON EDUCATION AND TRAINING DEPARTMENT EXPERIENCE INITIATIVES IMPROVING THE EFFECTIVENESS OF ENGLISH LESSONS OF GRADE 3, 4 THROUGH WARM UP SECTION AT THI TRAN PRIMARY SCHOOL Conducted by Mai Thi Hanh Position Teacher Working place Thi Tran Primary School Experienced Initiative of subject English THANH HOA 2019 SangKienKinhNghiem net CATEGO[.]