<![CDATA[The education system is having problems, especially the low quality of education. This matter could be caused by the ineffective learning process, so we need an steps that can improve students' understanding of the subject matter. Process changed to use the learning model with Discovery Learning. This study aims used determine the effect of using the model Learning Discovery Learning about cognitive learning outcomes of students in the subject matter chemistry class X IPA SMA Kristen YABT Manokwari. The research method used is a Quasi Experimental with the form of Time Series Design. Sampling technique using saturated sampling with a sample size of fifteen people. Data collection tools is a test of cognitive learning outcomes. Based on the results of data processing obtained, the average score The pre-test is 53.78 and the average score post-test is 68, and the N-Gain result is obtained shows an increase in the learning ability of students between before being treated and after being given treatment that is 0.73. Based on the Paired Sample T-test, it was found that there is an effect of using the learning model Discovery Learning on the results cognitive learning of students on the subject matter of chemical bonding class X IPA SMA Kristen YABT Manokwari with a large influence of 30%. Keywords: Learning model, discovery learning, outcomes learning, cognitive, Quasi Experimental ]]>
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