<![CDATA[This research aimed to develop guided inquiry-based learning instruments on environment change material that was based on local coast learning resources that could improve students’ scientific skill and achievement. The learning instruments developed were a syllabus, lesson plans, assessment instruments, and student worksheets. This research employed Borg and Gall’s development model. Expert validation and readability test showed that the products were valid and did not need any revision. The students’ achievement on scientific skill belonged to the categories of good and very good, and their completion achievements were above 75%. Their response belonged to the categories of positive and very positive. As the result, it could be concluded that the learning instruments developed in this research were able to improve the students’ scientific skill and achievement.]]>
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