มัธยมศึกษาปีที่ 6 : คณิตศาสตร์
H601 Studying of surface area of whirlpool by using model
H602 The studying relationship of the square area enclosed in a square, which is created by drawing a line connecting a points which devided the length of the original square to 1:N
H603 The study of relation between bipyramid with rectangle base that placed in ellipsoid
H604 Strategy for playing blackjack
H605 A study of Volume of Liquid in a Cone at Oblique angles
H607 The relationship between amount of triangles that caused by intersection of chords that connecteach dots on circumference and size of the angles that lead to the dots on the circumference