Sumnuan Kunpol. (2015) The Development of Analytical Skills in Mathematics of Grade 6 Students. <i>RANGSIT JOURNAL OF EDUCATIONAL STUDIES</i>, <i>2</i>(2), 41-55.Sumnuan Kunpol. "The Development of Analytical Skills in Mathematics of Grade 6 Students". RANGSIT JOURNAL OF EDUCATIONAL STUDIES 2 (2015):41-55.Sumnuan Kunpol. The Development of Analytical Skills in Mathematics of Grade 6 Students. Rangsit University, Pathum Thani, Thailand:ม.ป.ท. 2015.