IJSRP, Volume 10, Issue 2, February 2020 Edition [ISSN 2250-3153]
Candra Indi Kumala, Suyatno, Elok Sudibyo
This study aims to describe the effectiveness of learning tools with guided discovery models to train students science process skills at SMAN 1 Kedungwaru, Tulungagung on the subject matter of simple harmonic vibrations. The learning tool was developed using the 4D model and the trial design used was One Group Pretest and Posttest Design. Data collection was carried out using validation techniques, science process skills tests and questionnaires.