PENGEMBANGAN BUKU REFERENSI RANGKAIAN RLC UNTUK MENINGKATKAN KETERAMPILAN KOLABORASI MAHASISWA SEBAGAI UNSUR KETERAMPILAN ABAD 21

The background of this research is that students' competency skills are still low in collaborating when presenting the results they learn, students not yet skilled interpreting their findings so hesitant drawing conclusions. Furthermore, student activities collaborating, working together only discussing material, have shown solid cooperation making simple electronic crafts. objectives (1) measure validity, practicality and effectiveness product. (2) knowing collaboration skills. Research Location at PGRI Silampari University from January to. July 2022. subject a third semester physics education student. method used ADDIE development model. instruments observation sheets, questionnaires tests. Data analysis form quantitative descriptive. show book good to use. This can facilitate work on component questions contained test questions. To see feasibility being developed, it necessary hold validation process. From as whole valid with validity level 39.5% (valid). average response was 3.26 practical category learning using collaborative methods regarding RLC series increased outcomes multimeters oscilloscopes by 85.13% realm knowledge skills, then attitude shows 50% develop according expectations, 25.6% 29.4% begin develop.