This study was aimed to determine the effect of discovery learning model in influencing science process skills and learning motivation of class XI IPA MA Ushuluddin Singkawang. Pre-Experimental Design through One-Group Pretest Posttest Design was used as research method. The data were collected using test and questionnaire. From the results of hypothesis test (t-test) obtained tamounted to 15.02 with significance level (α) = 5% was obtained ttabel 1.703. Since tamounted 15.02 > ttabel 1.703, then H0 rejected and Ha accepted. This means that there was a difference science process skills before and after using of discovery learning model. Based on the determination of effect size, discovery learning model influenced on students\u27 science process skills of 49.74%. Discovery learning model was giving influence about students\u27 learning motivation by stronger motivation and strong motivation robust respectively 7% and 93%
