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The aim of this study was to find out : (1) Student learning outcomes of cooperative learning type of group investigation based on the science process skills model were higher than direct instruction learning model. (2) Science learning outcomes of students who had high motivation were better than students who had low motivation. (3) There were interaction between learning models and learning motivation influenced learning outcomes. This study used a quasi experimental method. The sample consists of two classes, class IVA amounts 34 students treated cooperative learning type of group investigation based on science process skills model (experimental group) and class IVB amounts 33 students treated direct instruction model (control group). The instruments were multiple choice tests and learning motivation questionnaire. This study used factorial 2 x 2 design with 2 lane ANAVA technique. The results showed that : (1) Science student learning outcomes treated cooperative learning type of group investigation based on science process skills model were higher than students treated direct instruction model.Sig. 0,000 < 0,005. (2) Science learning outcomes of students who had high motivation were better than students who had low motivation. Sig. 0,000 < 0,005. (3) There was interactions between learning models with learning motivation in influencing learning outcomes shown. Sig. 0,000 < 0,05.