PENGARUH STRATEGI PENGORGANISASIAN PEMBELAJARAN DENGAN GAYA KOGNITIF SPASIAL TERHADAP HASIL BELAJAR SISWA KELAS XI IPA PADA POKOK BAHASAN IKATAN KIMIA

This research is conducted to determine the effect of different micro strategies on organizing instruction to improve students learning outcomes in Chemical Bond. A 2x2 factorial design is used for this experiment conducted at the State High School Santo Thomas 3 in Medan. A sample of 88 student was taken using multi stage sampling. Based on their spatial cognitive style the sample is then divided into two groups,i.e high and low spatial cognitive style. In order to avoid contamination of treatment,the defferent micro strategies are implemented differently in the each school.The results of this reseach are as follows: (1) In general,to improve learning outcome in Chemical Bond, it is better to use the Merrill model micro strategi on organizing instruction the Component Display Theory (CDT) than to use the Taba model Strategy on organizing instruction the Concept Formation; (2) Spatial cognitive style of the student affects students learning outcome in Chemical Bond. Student who have high spatial cognitive style get better learning outcomes in Chemical Bond the student who have low spatial cognitive style; (3) There is an interaction between micro strategy on organizing instruction with student spatial cognitive style, Merrill Model strategy on organizing instruction using Component Display Theory (CDT) implementation is more effective in increasing student learning outcame in Chemical Bond than the Taba model strategy on organizing instruction Concept Formation ; For student with high spatial cognitive style,both strategies can be implemented because there are no differences obtained in student learning outcomes in Chemical Bond using both of the organizing strategies.