Job Sheet Learning Media on Briquette Production from Coffee Grounds and Soybean Peel with Various Compositions and Particle Sizes for Vocational High School Students

Abstract

The purpose of this study was to determine the learning outcomes of Vocational High School students about biobriquette using learning media in the form of instructional video and job sheet through experimental demonstration.The study was conducted through the pretest, theoretical explanation of briquettes using video learning, the first posttest, the presentation of material using job sheet media, and the second posttest. Briquettes production was done through drying, carbonizing, grinding carbon using a sawmill, sieving, molding, and drying. In the briquettes production, we varied the composition ratios between coffee grounds and soybean peel (i.e. 50:50; 60:40; 70:30; 80:20; and 90:10) and particle sizes (i.e. 1000, 600, and 250 µm), which were mixed with tapioca flour as the binder. Physical characteristics of briquettes were analyzed through some analyses. Based on the physical characteristic results of briquettes, briquettes at ratio (60:40) with a particle size of 250 µm have good Compressed Density (CD), Burning Rate (BR), and Specific Fuel Consumption (SFC) characteristics. Based on the evaluation of the pretest and posttest results, the learning media improved students' knowledge and understanding of biobriquette. This study brings new information about the need for biobriquette learning media with experimental methods to improve vocational students' comprehension.

Teaching Coagulation Using Bio Coagulant from Mango Skin Against Cement Wastewater to Vocational School Students through Experimental Demonstrations

“…Based on our previous studies for applying experiments to vocational schools (Nandiyanto et al, 2018;Nandiyanto et al, 2020a;Nandiyanto, 2020b;Nandiyanto, 2020c;Nandiyanto et al, 2020d;Nandiyanto et al, 2020e;Nandiyanto et al, 2020f;Hidayat et al, 2020), the main objective of this study was to determine the effect of the instructional video on the coagulation process using biocoagulant made from mango peel on cement wastewater for vocational high school students (SMK). In addition, this study aims to determine the effect of bio-coagulant made from mango peel on the quality of cement wastewater.…”

Video-Based Teaching on Electrolysis Using Simple Copper Media to Vocational School Students

“…Based on our previous studies for applying experiment for vocational school (Nandiyanto et al, 2020a;Nandiyanto et al, 2020b;Nandiyanto et al, 2020c;Nandiyanto et al, 2020d;Nandiyanto et al, 2020), here, experiments were carried out by making teaching combined with experimental demonstrations. The teaching process is supported by pretest questions, instructional videos, and post-test results.…”

Self-design Project Based Learning: Alternative Learning in Vocational Education

“…Like the current learning conditions, if students are going to carry out practical activities, the model used is by using a job sheet (Nandiyanto et al, 2020e;Nandiyanto et al, 2020f). In using this worksheet, students only carry out the commands listed in the worksheet without the ability to plan what they will make.…”

“…Indeed, the main point is the teachers that must be adapted in any situation to do and apply their creativities for improving students understanding. Teachers must improve their skills and use anything from the environment for making student to understand (Nandiyanto et al, 2020a;Nandiyanto et al, 2020b;Nandiyanto et al, 2020c;Handayani et al, 2020a;Hidayat et al, 2020;Ana. 2020).…”