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PENGARUH PROBLEM BASED INSTRUCTION (PBI) TERHADAP KEMAMPUAN SISWA DALAM MENYELESAIKAN MASALAH PENCEMARAN LINGKUNGAN IIS SUGIATI
Berkala Ilmiah Pendidikan Biologi (BioEdu) Vol 3 No 1 (2014)
Publisher : Program Studi Pendidikan Biologi, FMIPA, Universitas Negeri Surabaya

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Abstract

This research purposed to determine effect of the application of Problem Based Instruction (PBI) model toward ability student’s in solving of environmental pollution problems.This research was a Pre Experimental Design using the One Group Pretest-Posttest Design. Data of the student’s ability to solve problems collected using pretest and posttest methods of assessment with average reliability was 0.78. Test data were analyzed using the technique of Spearman rank correlation (α=5%) followed by calculating the determination coefficient. The results of research showed that there are 98,01% influence which was positive and significant between application of models PBI against ability of students in solving environmental pollution problems, with value of RS=0,99 (very high) and ZH (12.69) > Z table (0.96). Keywords: implementation of PBI, the students ability to solve the problem of environmental pollution
PROSES KONSTRUKSI SCAFFOLDING DALAM PEMODELAN MATEMATIKA Iis Sugiati; Anton Prayitno; Sri Rahayuningsih
EDU-MAT: Jurnal Pendidikan Matematika Vol 12, No 1 (2024)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/edumat.v12i1.18283

Abstract

Pemodelan matematika merupakan proses merepresentasikan dan menjelaskan permasalahan pada dunia nyata ke dalam pernyataan matematis. Penelitian ini bertujuan untuk menggambarkan proses scaffolding yang dapat diberikan kepada peserta didik guna meningkatkan strategi pembelajaran yang efektif dan fleksibel. Penelitian ini merupakan penelitian deskriptif kualitatif dengan pemilihan subjek menggunakan teknik Stratified Random Sampling. Subjek terdiri dari 3 peserta didik kelas X masing-masing satu peserta didik berkemampuan matematika tinggi, sedang, dan rendah. Hasil penelitian menunjukkan bahwa ketika subjek mengalami kesulitan dalam memahami suatu masalah, bantuan yang diberikan berupa panduan melalui pertanyaan. Jika mereka mengalami kesulitan dalam menghubungkan dengan konsep sebelumnya, bantuan akan berupa arahan untuk membuat tabel dan mereview kembali materi yang sudah dipelajari (Explaining, Reviewing, And Restructuring). Sementara jika subjek menghadapi kesulitan dalam menyusun strategi, bantuan yang diberikan adalah untuk mengingat kembali rencana strategi yang telah disiapkan sebelumnya dan mengembangkan pemikiran konseptual peserta didik (Developing Conceptual Thinking).  Kata kunci: langkah pemodelan, matematika, scaffolding Abstract: Mathematical modeling is the process of representing and explaining real world problems into mathematical statements. This research aims to describe the scaffolding process that can be provided to students to improve effective and flexible learning strategies. This research is a qualitative descriptive study with subject selection using the Stratified Random Sampling technique. The subjects consisted of three 10th grade students, one student each with high, medium and low mathematics abilities. The research results show that when the subject experiences difficulty in understanding a problem, the assistance provided is in the form of guidance through questions. If they have difficulty connecting with previous concepts, assistance will be in the form of directions to make tables and review the material they have studied (Explaining, Reviewing, And Restructuring). Meanwhile, if the subject faces difficulties in developing a strategy, the assistance provided is to recall the strategy plan that has been prepared previously and develop the students' conceptual thinking (Developing Conceptual Thinking). Key words: modeling steps, mathematics, scaffolding