Pengembangan E-LKPD Berbasis PMRI pada Materi Luas Permukaan Kerucut

Authors

Hazrah Maharani STKIP Muhammadiyah Pagar Alam
Widiawati Widiawati STKIP Muhammadiyah Pagar Alam
Neni Lismareni STKIP Muhammadiyah Pagar Alam

DOI:

Abstract

This study aims to develop an electronic student worksheet (E-LKPD) based on the Indonesian Realistic Mathematics Education (PMRI) approach for the topic of cone surface area for Grade IX students of SMP Muhammadiyah Pagar Alam that is valid and practical. The method used was Research and Development (R&D) by adapting the formative evaluation model proposed by Tessmer, which consists of self-evaluation, expert review, one-to-one trials, small group trials, and field trials. Data collection techniques included expert validation sheets, student response questionnaires, interviews, and learning evaluation tests. The results showed that validations by PMRI, language, and material experts placed the E-LKPD in the valid category, with student responses indicating that it was highly practical and easy to use. In addition, the test results revealed that the E-LKPD had a potential effect of 84.61% in improving students’ understanding of cone surface area. In conclusion, the PMRI-based E-LKPD developed in this study was declared valid and qualitatively practical.

Keywords: Cone Surface Area, E-LKPD, Formative Evaluation, PMRI, Development

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