จันทร์แก้วป.; กล้าหาญร.; อินต้นพั้วณ. The Use of Applications "padlet (padlet)" To Solve the Problem of Academic Achievement in Economics Subject Sufficiency Economy for Grade 2 Students.Wat Buak Khrok Nua School, Saraphi District, Chiang Mai Province. JEM 2023, 2.