127 posttest normality validity appencix experiment 139 activity 145 realibity 160 outcome documentation observation test item 136 120 silabu 151 137 index clas difficulty answer guideline APPENDIX table result student cognitive 128 descrimination learning 130 research aspect 102 homogenity data 140 131 154 control instrument work statistic 143 activitie appendix key vii plan LIST desrimination sheet card 133 149 141 156 134 pretest calculation lesson basic hypothesi 105 II