<![CDATA[The aim of the paper is to know the validity and practicality of handout biology based on local potential of Ujong Blang beach. This study adapted the ADDIE model of research & development. The validity of handout is known from the experts’ validation score, while the practicality is known from the student's response. The results showed that the validation scores of media and material experts and practitioners had a high level of validity value (mean> 90) so that was categorized as highly valid. While the test readability by students also showed highly valid level of the handout validity Based on the results, it can be concluded that the biology handout based on local potential of Ujong Blang Beach developed more feasible to implement in class XI of SMK in the learning process to improve critical thinking skills, conceptual understanding, and environmental attitude.]]>
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