Yerimadesi, Bayharti, S.M. Jannah, Lufri, Festiyed, Y. Kiram
This Research and Development(R&D) aims to produce guided discovery learning based module on topic of acid-base and determine its validity and practicality in learning. Module development used Four D (4-D) model (define, design, develop and disseminate).This research was performed until development stage. Research's instruments were validity and practicality questionnaires. Module was validated by five experts (three chemistry lecturers of Universitas Negeri Padang and two chemistry teachers of SMAN 9 Padang). Practicality test was done by two chemistry teachers and 30 students of SMAN 9 Padang. Kappa Cohen's was used to analyze validity and practicality. The average moment kappa was 0.86 for validity and those for practicality were 0.85 by teachers and 0.76 by students revealing high category. It can be concluded that validity and practicality was proven for high school chemistry learning. © Published under licence by IOP Publishing Ltd.
Department of Chemistry, Faculty of Mathematics and Science, Universitas Negeri Padang, Indonesia; Department of Biology, Faculty of Mathematics and Science, Universitas Negeri Padang, Indonesia; Department of Physics, Faculty of Mathematics and Science, Universitas Negeri Padang, Indonesia; Department of Sport Coaching Education, Faculty of Sport Science, Universitas Negeri Padang, Indonesia
