This study aims to produce a product in the form of a science learning model for the acquisition of motion material concepts in valid objects, with the development path using a 4D model consisting of 4 stages of development namely define, design, develop, and disseminate. Learning tools developed are syllabus, Lesson Plain, SAS and tests of critical thinking skills and student learning outcomes. However, at this writing focused on the process of validation testing through validation tests on the development of devices made. The final result of this study is to produce valid learning development products. Keywords: Learning Devices, Validation

-The research on coastal sand in Mataram-Lombok city, located at several beaches, namely, Gading, Loang Baloq, Penghulu Agung, and Ampenan, is

Abstract

The study aims to develop physics learning device based guided inquiry with experiments that valid, practical, and effective to improve students’ mastery concept. The research stages refers to Borg & Gall's model from preliminary studies to main field testing. The validity data is obtained from the assessment for the feasibility of learning devices by experts, then analysed to determine the level of validity. Expert advice is used to revise the learning device. Learning device was implementation to test the practicality and effectiveness of learning device to improve students' mastery concept. The results of the study show that learning device are very valid category. Result of the trial based on the data of learning implementation show that learning device are in the practical category.  Guided inquiry model with an experiment in learning physics effective to improve students’ mastery concept. Increased students mastery concept on cognitive aspect remembering (C1), understanding (C2), applying (C3) and create (C6) in high categories, while the cognitive aspect analyzing (C4) and evaluating (C5) in the medium category.

Tujuan dari penelitian ini adalah untuk menentukan validitas perangkat pembelajaran fisika  berbasis model discovery dengan pendekatan konflik kognitif. Jenis penelitian ini termasuk penelitian dan pengembangan (Research and Development). Prosedur penelitian pengembangan yang dilakukan dalam pengembangan perangkat pembelajaran fisika model discovery dengan pendekatan konflik kognitif mengacu pada langkah-langkah pengembangan 4D yaitu define, design, develop dan disseminate. Perangkat pembelajaran fisika berbasis model discovery dengan pendekatan konflik kognitif yang dikembangkan terdiri dari silabus, RPP, LKPD, handout, dan instrumen evaluasi. Jurnal ini hanya fokus pada validitas isi dan kontruk yang divalidasi oleh ahli. Berdasarkan hasil analisis validitas menggunakan indeks Aiken dan analisis reliabilitas menggunakan percentage agreement didapatkan bahwa perangkat pembelajaran fisika berbasis model discovery dengan pendekatan konflik kognitif yang dikembangkan memiliki kriteria valid dan reliabel.