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All Journal SECONDARY : Jurnal Inovasi Pendidikan Menengah (JIPM) Society : Jurnal Pengabdian dan Pemberdayaan Masyarakat
Aditya, Bagas
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Humanities Decision Sciences, Operations Research & Management Education Environmental Science Social Sciences Other

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ANALISIS KESULITAN DALAM MENYELESAIKAN SOAL BARISAN DAN DERET GEOMETRI SISWA SEKOLAH MENENGAH ATAS Isnaini, Ade Nur; Mahardika, Arsyi Pramudya; Aditya, Bagas; Napis, Napis
SECONDARY: Jurnal Inovasi Pendidikan Menengah Vol. 6 No. 1 (2026)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/secondary.v6i1.9210

Abstract

This study aims to determine the difficulties students experience in working on problems on geometric sequences and series. The type of research used is descriptive qualitative. The subjects studied were 10 students of class X-5 SMA Putra Bangsa, Depok City, based on the results of daily tests that were below the Minimum Completion Minimum (KKM). The test was given as many as 5 essay questions in the form of stories. The results of the study showed that the causes of difficulties experienced by students in solving geometric sequences and series problems included: 1) difficulties in distinguishing geometric sequences and series problems, 2) difficulties in understanding the intended problem and difficulties in translating it into mathematical sentences, 3) difficulties in solving problems related to geometric sequences and series material, sometimes students are confused by the questions asked in the problem, 4) students' difficulties when answering questions and entering formulas. This is as from the analysis it is known that the highest percentage of students' difficulties in solving story problems on geometric sequences and series reaches 71%. ABSTRAK Penelitian ini bertujuan untuk mengetahui kesulitan siswa dalam mengerjakan soal pada materi barisan dan deret geometri. Adapun jenis penelitian yang digunakan adalah deskriptif kuallitatif. Subjek yang diteliti adalah siswa kelas X-5 SMA Putra Bangsa Kota Depok sebanyak 10 siswa berdasarkan pada hasil ulangan harian yang berada dibawah KKM. Tes diberikan sebanyak 5 butir soal  essay berbentuk cerita. Hasil penelitian menunjukan bahwa penyebab kesulitan yang dialami siswa dalam menyelesaikan soal barisan dan deret geometri diantaranya: 1) kesulitan dalam membedakan soal barisan dan deret geometri, 2) kesulitan memahami soal yang di maksud dan kesulitan dalam menerjemahkan kedalam kalimat matematika, 3) kesulitan dalam menyelesaikan soal berkaitan dengan materi barisan dan deret geometri terkadang siswa  terkecoh dengan pertanyaan yang ditanyakan pada soal, 4) kesulitan siswa pada saat menjawab soal dan memasukan rumus. Hal ini sebagaimana dari analisis diketahui bahwa presentase tertinggi kesulitan siswa dalam melakukan penyelesaiann soal cerita pada barisan dan deret geometri mencapai 71% .
Advancing Styrofoam Waste Recycling Management within the Framework of a Green Economy At UD Tiga Putra Gatot Setyono; Rodhiyah; Ulum, Miftahul; Haryadi Ogsa, Muhammad Al Khawarizmi; Aditya, Bagas
Society : Jurnal Pengabdian dan Pemberdayaan Masyarakat Vol. 7 No. 1 (2026): Vol. 7 No. 1, April 2026
Publisher : Universitas Dinamika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37802/society.v7i1.1224

Abstract

The increasing accumulation of Styrofoam waste has become a serious environmental concern due to its non-biodegradable properties and the lack of effective disposal and recycling pathways. Micro- and small-scale enterprises play a strategic role in addressing this issue at the local level, including UD Tiga Putra in Gresik, Indonesia, which is actively involved in Styrofoam waste processing. Before the implementation of this community engagement program, the enterprise encountered several operational challenges, such as the use of outdated processing equipment, limited production capacity, and inadequate managerial and occupational safety practices. In particular, the existing Styrofoam melting machine, with a capacity of 150 kg per day, frequently experienced technical failures and resulted in recycled products of inconsistent quality. To address these constraints, a community partnership program was developed by integrating technological upgrading, occupational health and safety improvement, and managerial capacity strengthening. A newly designed appropriate-technology Styrofoam melting machine with a capacity of 300 kg per day was introduced, leading to a substantial increase in production efficiency and operational stability. This technological enhancement was complemented by structured training on workplace safety, including the proper use of fire extinguishers and personal protective equipment, as well as mentoring on systematic financial record-keeping practices. The program outcomes indicate improved operational reliability, enhanced safety awareness among workers, and greater financial transparency. Overall, the findings demonstrate that an integrated, community-based approach can effectively enhance the resilience and competitiveness of small recycling enterprises while supporting circular economy initiatives and sustainable local economic development.
Co-Authors Gatot Setyono Haryadi Ogsa, Muhammad Al Khawarizmi Isnaini, Ade Nur Mahardika, Arsyi Pramudya Miftahul Ulum Napis, Napis Rodhiyah