Penerapan Model Pembelajaran Kooperatif Pendekatan Struktural Numbered Heads …

The background of this research is the result of learning mathematics of class student VII6 SMP Negeri 16 Pekanbaru which is still under the minimum mastery criteria with a persentage of 10,34 % only 3 students from 29 students who achieve the minimum mastery criteria on the associating the relationship and the area of a rectangle (square, rectangle, length, trapezoid, rhombus, kite) and triang…