At the development stage, the worksheets were validated by five validators consisting of two lecturers and three biology teachers in Pontianak. The student’s worksheets were designed based on the problems obtained from interviews with biology teachers in three different schools.
This study used a 4D development model limited to three defining, designing, and developing stages. This study aims to describe the development and determine the feasibility of guided inquiry-based worksheets as teaching materials for the endocrine system sub material for second-grade of high schools.
The use of student’s worksheets as teaching materials and supporting learning activities is still not evenly distributed.
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