Problem Based Learning to Improve the Quality of Mathematics Teaching At Elementary School Education Academic Year 2018/2019 (Published)
Research conducted at the University of Quality Jl Ngumban Surbakti No 18 Medan, North Sumatera Indonesia. This study aims to determine the influence of problem based learning models to improve learning quality. The type of research that researchers use is a draft of the research on quasi exsperimen with research draft using Non-Equivalent Control Group Design experiments. The population in the study is all students of the second generation of PGSD with a total of 7 classes with a student number of 278 people and as a sample of the class 2B21 (X-2) as the experimental class as many as 40 people and class 2B22 (X-1) as control class as many 35 people are acquired in a random way. Research instrument is a form test of the 35 description of the problem that has been validated by the validator with the level of breliability of Cronbach’s alphadan of 0.83 very high category. Hypothesis testing conducted with Independent sample T-Test significantly ∝ = 5% and test requirement analysis is data normality and variance homogenization.Based on the results of the test Independent Sample Test obtained t = 6.2706 and t at the degree of freedom (DF = 73) and a significant level of α 0.05 is 1.6660. It was therefore null Hypotesis rejected and received an alternate hypothesis. Thus the implementation of a problem-based learning model is influential and can improve the outcomes of low-grade mathematics teaching the primary school teacher Education course of Quality University
The Development of Teaching Material of Writing Exposition Text Based Problem on X Grade Student of State Vocational School 7 Medan, Indonesia (Published)
This study aims to determine the results of the development of teaching materials of writing esksposition text based problems on X grade students State Vocational School 7 Medan. The research method used is research and development (R & D) method proposed by Sugiyono to refer to Borg & Gall model. The trial subjects consisted of 3 students with individual trials, 9 students with small group trials, and 32 students with limited field trials. Data collection techniques use observation, interviews, questionnaires and exposition writing test. The results show that: (1) validation of material experts includes the expediency of the content with an average of 85.93% on very good criteria, the expediency of presentation with an average of 84.61 % on very good criteria, and language aspects with an average of 88.46% on very good criteria, (2) design expert validation is with an average of 84.58% on very good criteria, (3) teacher’s response is with average 83.82% on very good criteria, (4) individual trial is with an average of 76.39% on good criterion, (5) small group trials is with an average of 81.25% on very good criteria, and (6) ) limited field test is with an average of 87.04% on very good criteria. The writing test result of the exposition text of the students before using the module is 70, while the writing test result of exposition text of the students after using the module increases 84.68. The difference is 14.68 from before to after. This proves that the teaching materials of writing exposition text developed to improve student learning outcomes by using problem-based learning methods.
Problem-Based Teaching and Learning Devices: A Research and Development on Natural Science Materials for Primary School (Published)
This study aims to develop a model of teaching and learning devices of Natural Science subject for primary schools. The devices include curriculum, syllabus, lesson plan, instructional media, and evaluation devices. To achieve the objective, this research applied research and development adopted from Thiagarajan’s 4-D model (1974) with modification. The development consists of four steps: define, design, develop, and disseminate. In developing the teaching and learning devices, this study applied problem-based learning approach by introducing the students to the real problems with five stages; the stages are (a) orient the students to the problem, (b) organize the students to learn, (c) guide the individual research or groups, (d) develop and present the results, and (e) analyze and evaluate the problem-solving process. State Primary school 12 Baruga Kendari, Indonesia was chosen as a place of research. The data were collected through documentation, observation, interviews, and testing. The data were analyzed descriptive qualitatively and quantitatively. The result of the research shows that the process of developing of the teaching and learning model (on Natural Science subject) with problem-based approach consists of several steps; they are identification, needs analysis, design, development, and evaluation (final revision). The teaching and learning devices developed are valid and appropriate to use. The learning devices are effective to be used because of three main reasons: (1) achieving criteria existed above the minimum mastery criteria; (2) the experiment class test results were significantly higher than the control class test results; (3) the developed devices model has met the criteria of practicality
The Effectiveness of Problem – Based learning Strategy in the Acquisition of Scientific Concepts in Physics and the Development of science operations among the Ninth Grade Female Students (Published)
The purpose of this study is to design the unit of the mechanics and its effect on substances among the ninth grade female students in Jordan depending on problem – based learning strategy. The study also aimed at identifying the problem – based learning strategy as well as highlighting the applied importance of physics in the students’ daily life in addition to specifying the effect of the problem – based learning strategy in the student’s acquisition of scientific concepts in physics and development of their science operation. The study produced a set of results and recommendations the most significant of which were that there is an effect of the problem based learning strategy in the ninth grade students’ acquisition of the scientific concepts in physics, and that there is an impact of the problem – based learning strategy in the development of science operations in physics among the ninth grade students. The researcher recommends to construct and design the units of the scientific subjects by means of modern learning strategies like the problem – based learning strategy to facilitate the learning process by male and female students
Influence of Problem-Based Learning in Chemistry on Academic Achievement of High School Students in Osun State, Nigeria (Published)
The aim of this study was to investigate the Influence of Problem-Based learning in Chemistry education on academic achievement of school students. To achieve this purpose, three research questions were generated. The study adopted a descriptive survey design. Purposive sampling technique was used to select 300 senior secondary two (S.S.2) science students and data was collected by administering a questionnaire on the influence of problem-based learning in Chemistry education on academic achievement of school students. Data generated was analyzed using descriptive statistics. The findings of this study revealed various activities engaged in by students during PBL lessons. Based on the findings, a number of recommendations were made.