ทะนะห.; ศรีวิชัยไ.; เมฆปัจฉาพิชิตศ. The Development of Academic Achievement in The History of Students Mathayomsuksa 3 on The Role of The Thai Nation in The Democratic Era Using a Graphical Plan Ratchaprajanukhro School 31, Mae Chaem District, Chiang Mai Province. JEM 2023, 2.