Use of Barcode Based Traditional Games in Improving Student Learning Outcomes in Learning Citizenship Education (Ppkn)

This study collaborates between traditional games and technology. The purpose of this study was to improve student learning outcomes in PPKN (Citizenship Education) learning through barcode-based traditional games tumbawa. This type of research is classroom action research. This research was conducted because based on preliminary observations, the results of students' daily tests in PPKn learning were still low, from 25 students, 25 students, only 12 people or 48% had good learning outcomes. The procedures used in this study consisted of planning, implementing, observing, reflecting. This research was conducted in two cycles of action. The data collection methods used were tests, observation, interviews, and documentation. In analyzing the data used a qualitative descriptive method assisted by the calculation of the percentage. The targeted research output is the national journal published in the internationally accredited journal 5. The level of technology readiness used is in the field of education (TKT 2). This research is expected to create a learning atmosphere and a learning process that attracts students' attention so that it provides better learning achievement than before.

Synthesis and Characterization of Graphene Oxide Based Metallic Sulfides Nanostructures for Supercapacitor Applications

The limited available energy sources and their improper use require efficient energy storage devices. Therefore, supercapacitors are more attractive due to light weight, low cost and high specific capacitance. Graphene oxide (GO) based metal sulfides have huge potential for electrochemical applications due to large specific surface area and electrical conductivity. In this study, various GO based metal sulfides were hydrothermally synthesized on nickel foam substrate for supercapacitor applications. The structural phases were observed using X-ray diffraction. The surface morphology of aluminum, strontium, nickel and zinc based sulfides exhibited nanowall, nanorod, nanoplate and nanoweb like structures, respectively. The metal sulfides showed good electrochemical performance, which was depicted using both three and two electrodes systems. The specific capacitance and energy density determined using three electrodes galvanostatic charge discharge for GO based sulfides of aluminum, strontium, nickel and zinc were 2373.51, 1824.14, 2368.833, 2400.30 Fg-1 and 118.68, 91.56, 118.44, 120 WhKg-1, respectively. Similarly, the power densities and specific capacitance retention up to 1000 cycles were measured as 2663.58, 4356.64, 1010.00, 4407.73 WKg-1 and 57, 67, 42.20, 95.90 %, respectively. Furthermore, an excellent two electrodes symmetric behavior was revealed for GO based sulfides of aluminum nanowalls, strontium nanorods, nickel nanoplates and zinc nanoweb, because high energy densities 20.55, 10.55, 15.72, 20.29 WhKg-1 and power densities 585.50, 294.35, 848.50, 485.30 WKg-1, respectively, were observed. Hence, the excellent electrochemical behavior exhibited by the fabricated nanostructures suggested supercapacitor applications.