| Summary: | <p>Physical Chemistry 5 is a main and diffi cult course for students because of its<br />relation to microsspic properties and abstract with the result that the visualization is<br />necessity. Therefore, the appealing learning that can manure the students’ creativeness<br />and innovation and motivate students to be entrepreneurs is necessity. Such learning is a<br />learning using chemo-entrepreneurship (CEP) approach. Lesson study activity is potential<br />in learning community and collaboration development effectively. Therefore, the learning of<br />Physical Chemistry 5 using CEP approach through lesson study activity is necessity. This<br />research was aimed to improve the students’ achievement on Physical Chemistry 5 lecture<br />using CEP approach through lesson study activity. This research was conducted by quasi<br />experiment method involving students on seventh semester of Chemistry Programme as<br />subject. Lesson study activity was conducted by three stages i.e. planning, doing, and<br />refl ecting. The instrument of research included the achievement test, observation sheets,<br />and questionnaire sheets. The results showed that the achievement of experimental group<br />was higher than of controlled group. The learning completeness of experimental group was<br />higher than of controlled group. It was shown that this learning can improve students’ life skill.</p><p> </p><p><strong>Key words:</strong> achievement, chemo-entrepreneurship, lesson study</p>
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