scholarly journals Students’ Obstacles in Learning Sequence and Series Using Onto-Semiotic Approach

2021 ◽  
Vol 15 (2) ◽  
pp. 115-132
Author(s):  
Andina Aulia Rachma ◽  
Rizky Rosjanuardi
Keyword(s):  
Mathematical Model ◽  
Conceptual Understanding ◽  
Design Research ◽  
Learning Situation ◽  
Learning Sequence ◽  
Interpretive Paradigm ◽  
Semiotic Approach ◽  
Arithmetic Sequences ◽  
Written Test ◽  
Do So

Sequences and series is one of the mathematical topics that are related to everyday life. The topic is also taught at several levels of education in Indonesia. However, many students still experrienced difficulties in learning this topic. This study uses an interpretive paradigm that is part of the Didactical Design Research (DDR). This research aims to analyze students’ learning obstacles on the topic of sequence and series using the onto-semiotic approach. To do so, written test consists of five questions related to the conceptual understanding of an arithmetic sequences and series was administered to 23 students from one of the senior high schools in Kota Tangerang Selatan followed by interviews with 4 students. The results show that learning obstacles are classified into epistemological, ontogenic, and didactical obstacles. Based on the onto-semiotics approach, the students had difficulties in defining a mathematical idea on sequences and series topics. They could convert a problem into mathematical model but were confused to use a proper procedure. It can be concluded that students still experience obstacles in learning sequences and series topic. The results of this study can be used by teachers as considerations in designing learning situation on the topic of sequence and series.

scholarly journals Assessing moodle-assisted e-learning for students’ concept understanding and critical thinking skills in algebra

2021 ◽  
Vol 12 (2) ◽  
pp. 359-369
Author(s):  
Agus Pahrudin ◽  
Yustika Fatimatuz Zahra ◽  
Nanang Supriadi ◽  
Iip Sugiharta ◽  
Farida Farida ◽  
...  
Keyword(s):  
Critical Thinking ◽  
Conceptual Understanding ◽  
Sampling Technique ◽  
Thinking Skills ◽  
Critical Thinking Skills ◽  
Cluster Sampling ◽  
Homogeneity Test ◽  
Quasi Experimental ◽  
E Learning ◽  
Written Test

Conceptual understanding and critical thinking skills are necessary for all students to help them in their learning process. This research aims to determine the effect of Moodle-assisted e-learning on (1) conceptual understanding, (2) critical thinking skills, and (3) conceptual understanding and critical thinking skills combined. This research employed a quasi-experimental design with random cluster sampling was used as the sampling technique. An algebra written test was used to collect research data. Furthermore, the researchers performed the normality test, homogeneity test, and MANOVA analysis to analyze the data. The researchers discovered that Moodle-assisted e-learning influenced students' conceptual understanding, critical thinking skills, and conceptual understanding and critical thinking skills.

The Mundane and Strategic Work in Collaborative Design

Design Issues ◽  
2018 ◽  
Vol 34 (3) ◽  
pp. 42-58 ◽  
Author(s):  
Virve Hyysalo ◽  
Sampsa Hyysalo
Keyword(s):  
Collaborative Design ◽  
Participatory Design ◽  
Design Research ◽  
User Involvement ◽  
Design Issue ◽  
External Context ◽  
The Future ◽  
Design Activities ◽  
Prevailing View ◽  
Do So

We address the design issue of mundane and strategic work in collaborative design. We do so through an examination of a series of participatory design activities in building a flagship library of the future. Both strategic and mundane work are found to permeate the processes, results, and further uptake of collaborative design outcomes as internal issues of user involvement, and not just as external context or excludable routine execution, which has been the prevailing view to them in design research to date.

EXPLORING THE IMPLEMENTATION OF TEACHER LEADERSHIP IN LESOTHO HIGH SCHOOLS

2021 ◽  
Author(s):  
Lieketseng Lethole ◽  
◽  
June Palmer ◽  
Edwin de Klerk ◽  
◽  
...  
Keyword(s):  
High Schools ◽  
Teacher Leadership ◽  
School Environment ◽  
Leadership Skills ◽  
Change Agents ◽  
Leadership Succession ◽  
Interpretive Paradigm ◽  
Sustainability Principles ◽  
Collaborative Efforts ◽  
Do So

Whilst teacher leadership is an evolving concept with a potential that has yet to be realized, the fostering of teachers’ leadership growth remains a sustainability element in education worldwide. Teacher leadership for sustainability indicates a fresh and extended consideration of leadership emphasising sustainability principles and providing leadership that transforms the school environment while engaging in collaborative efforts to do so. Located in the interpretive paradigm, this qualitative study sought to elicit the views of Heads of department (HoDs) and District Education Managers (DEMs) in Lesotho high schools to explore the views they consider most relevant in developing teacher leadership skills to ensure leadership succession as sustainable practice. The findings reveal that to achieve sustainable teacher leadership, there is a need to withdraw from a top-down hierarchical model of leadership towards more flexible, transformative, and empowering approaches to leadership. Furthermore, in order to maintain sustainable teacher leadership, HoDs and DEMs must be innovative in providing reflective plans for professional development that can sustain teachers throughout their careers and foster learning environments that are healthy for teachers, learners, and the school. The study recommends that school leaders should mobilise the leadership expertise of teachers in their schools in order to create more chances for transformation and capacity building. Sustainable teacher leadership can help bring about great improvements in a school, including extending the scope of leadership beyond what the HoDs and DEMs cannot achieve alone, and building their relationship capacity to become collaborative change agents.

scholarly journals Inside–Out Method for Simulating a Reactive Distillation Process

Processes ◽  
2020 ◽  
Vol 8 (5) ◽  
pp. 604 ◽  
Author(s):  
Liang Wang ◽  
Xiaoyan Sun ◽  
Li Xia ◽  
Jianping Wang ◽  
Shuguang Xiang
Keyword(s):  
Mathematical Model ◽  
Design Research ◽  
Reactive Distillation ◽  
Mutual Influence ◽  
Molar Fraction ◽  
Estimation Method ◽  
Distillation Process ◽  
K Value ◽  
Calculation Process ◽  
Inside Out

Reactive distillation is a technical procedure that promotes material strengthening and its simulation plays an important role in the design, research, and optimization of reactive distillation. The solution to the equilibrium mathematical model of the reactive distillation process involves the calculation of a set of nonlinear equations. In view of the mutual influence between reaction and distillation, the nonlinear enhancement of the mathematical model and the iterative calculation process are prone to fluctuations. In this study, an improved Inside–Out method was proposed to solve the reaction distillation process. The improved Inside–Out methods mainly involved—(1) the derivation of a new calculation method for the K value of the approximate thermodynamic model from the molar fraction summation equation and simplifying the calculation process of the K value, as a result; and (2) proposal for an initial value estimation method suitable for the reactive distillation process. The algorithm was divided into two loop iterations—the outer loop updated the relevant parameters and the inside loop solved the equations, by taking the isopropyl acetate reactive distillation column as an example for verifying the improved algorithm. The simulation results presented a great agreement with the reference, and only the relative deviation of the reboiler heat duty reached 2.57%. The results showed that the calculation results were accurate and reliable, and the convergence process was more stable.

scholarly journals The concepts of area and perimeter: Insights and misconceptions of Grade 10 learners

Pythagoras ◽  
2016 ◽  
Vol 37 (1) ◽  
Author(s):  
France M. Machaba
Keyword(s):  
Prior Knowledge ◽  
Conceptual Understanding ◽  
Clinical Interviews ◽  
Root Cause ◽  
Area And Perimeter ◽  
Written Test ◽  
The Relationship

This article focuses on learners’ understanding and their descriptions of the concepts of area and perimeter, how learners solve problems involving area and perimeter and the relationship between them and misconceptions, and the causes of these misconceptions as revealed by learners when solving these problems. A written test was administered to 30 learners and clinical interviews were conducted with three of these learners, selected based on their responses in the test. This article shows that learners lack a conceptual understanding of area and they do not know what a perimeter is. Learners also hold misconceptions about the relationship between area and perimeter. It appears that inadequate prior knowledge of area and perimeter is the root cause of these misconceptions. This article provides suggestions on how to deal with the concepts of area and perimeter.Keywords: area; perimeter; insights; misconceptions; Grade 10

scholarly journals The Data Package in Learning Mean Using LSLC and PMRI

2021 ◽  
Vol 15 (1) ◽  
pp. 61-70
Author(s):  
Poppy Trianti Rahayu ◽  
Ratu Ilma Indra Putri
Keyword(s):  
Learning Community ◽  
Lesson Study ◽  
Design Research ◽  
Teaching Experiment ◽  
Learning Trajectory ◽  
Literature Study ◽  
Field Notes ◽  
Design Type ◽  
Written Test ◽  
Research Type

This study aims to produce statistical learning designs in the introduction of the concept of average values and knowing student learning outcomes in learning average values by previously learning about the presentation of data consisting of tables and diagrams through learning trajectories and what happens during the learning process. This learning is based on Lesson Study for Learning Community (LSLC), the approach of Indonesian Realistic Mathematics Education (PMRI). This study uses a type of Design Research method research design type of validation study, which involves in MTs 1 in Palembang. There are three stages in design research type validation studies namely Preparing for the experiment in the form of literature study and the design of the Hypothetical Learning Trajectory (HLT); Design experiment in the form of a Preliminary Teaching Experiment (Pilot Experiment) and Teaching Experiment; and Restrospective analysis. The instruments used were written test, video and field notes. The results of learning experiments show that the design of learning provided has helped students understand the concept of Mean.

scholarly journals Peningkatan Kompetensi Strategis Siswa Melalui Model Pembelajaran Conceptual Understanding Procedures

2020 ◽  
Vol 2 (1) ◽  
pp. 01
Author(s):  
Adriyanto Adriyanto ◽  
Dewi Pramita ◽  
Abdillah Abdillah ◽  
Syaharuddin Syaharuddin ◽  
Mahsup Mahsup ◽  
...  
Keyword(s):  
Data Analysis ◽  
Conceptual Understanding ◽  
Design Research ◽  
Learning Model ◽  
Sampling Techniques ◽  
Test Results ◽  
Test Instrument ◽  
Post Test ◽  
Quasi Experimental ◽  
Data Collection Technique

Abstract: This study aims to determine the effectiveness of conceptual understanding procedures learning model to students' strategic competencies taken from student post-test results. The study was included in quasi Experimental Design research involving 41 students consisting of two classes taken from five classes with porposive sampling techniques. The data collection technique used is a test instrument with a significant level of 5%. The results showed that the average strategic competency ability of experimental class students was 61.7, while the average strategic competency ability of control class students was 51. Based on data analysis from the t-test hypothesis that has been done, the results showed t-count > t-table (2.43 > 1.69) so that Ho was rejected and Ha accepted. Therefore, it can be concluded that the Conceptual Understanding Procedures learning model is effective against the strategic competencies of students in the material of building flat-sided rooms in grade VIII junior high school.Abstrak: Penelitian ini bertujuan untuk mengetahui efektifitas model pembelajaran Conceptual Understanding Procedures terhadap kompetensi strategis siswa yang diambil dari hasil post-test siswa. Penelitian ini termasuk dalam penelitian Quasi Eksperimental Design yang melibatkan 41 siswa yang terdiri dari dua kelas yang diambil dari lima kelas dengan teknik porposive sampling. Teknik pengumpulan data yang digunakan adalah instrumen tes dengan taraf signifikan 5%. Hasil penelitian menunjukkan, rata-rata kemampuan kompetensi strategis siswa kelas eksperimen sebesar 61,7, sedangkan rata-rata kemampuan kompetensi strategis siswa kelas kontrol sebesar 51. Berdasarkan analisis data dari uji hipotesis uji-t yang sudah dilakukan, hasilnya menunjukkan t-hitung > t-tabel (2,43 > 1,69) sehingga Ho ditolak dan Ha diterima. Oleh sebab itu, dapat disimpulkan bahwa model pembelajaran Conceptual Understanding Procedures efektif terhadap kompetensi strategis siswa pada materi bangun ruang sisi datar kelas VIII SMP.

Losing metrics … finding heart

2019 ◽  
Vol 10 (2) ◽  
pp. 176-192
Author(s):  
Julia K. Day
Keyword(s):  
Design Process ◽  
Research Team ◽  
Social Impact ◽  
Design Research ◽  
Social Issues ◽  
Human Condition ◽  
Content Type ◽  
Narrative Methods ◽  
Special Cases ◽  
Do So

Purpose This paper aims to provide an example of ways in which research plans may shift and how the research team dealt with necessary changes as they unfolded; within this context, the authors encourage the use of qualitative and narrative methods prior to and during the design process to better understand the population for which they are designing. Second, the stories from this case study illustrate the importance of understanding the overall context in design solutions, understanding the value of working with residents during the design process and using design as a tool for advocacy and empathy. Design/methodology/approach Initially, a traditional mixed method approach was developed to study the feasibility of tiny homes in homeless populations. Responding to unforeseen circumstances, the research team shifted to more appropriate narrative research methods, capturing a profile of the community. The paper shares narrative accounts from the tiny home village residents. Findings Overall, the stories from the Portland visit illustrate the importance of social impact and the understanding of the overall context in design. This study also advocates the use of qualitative interview and narrative methods in design research, especially when used to better understand the “houseless” or other special populations. Research limitations/implications There were limitations to the research that likely affected the outcomes and the results. The most apparent limitation was the unanticipated shift in methodology that occurred during the research study, which is also arguably one of the best strengths. Also, because of the qualitative nature of this research, the results are not generalizable to a broader context and only valuable or applicable to special cases. Practical implications The true human condition of displaced people is often misrepresented in the minds of those who are unaffected. Designers are uniquely qualified to help solve seemingly unsolvable problems but must do so with caution. Social implications For those taking on the challenge of designing for disadvantaged communities, this paper reveals that design research is more than just a problem to solve through habitable boxes. This study brings to light several social, economic and design complications that may arise in this vein of research. Originality/value This research methodology was unexpectedly altered when unforeseen events necessitated a shift in the research plan. This process revealed that sensitive social issues can be difficult to navigate and must be treated with utmost respect and flexibility. Issues such as affordable housing, homelessness and sustainability are all examples of wicked problems, which designers are uniquely qualified to help solve but must do so with caution and a true understanding of context. Many lessons were learned through this process.

Students’ Understanding of Liıght Concepts ın the Secondary School

2015 ◽  
Vol 3 (6) ◽  
pp. 36-49
Author(s):  
P.R.K.A Vitharana
Keyword(s):  
Secondary School ◽  
Secondary Students ◽  
Conceptual Understanding ◽  
Learning Science ◽  
Science Students ◽  
Light Responses ◽  
Complex Process ◽  
Understanding Of Science ◽  
Written Test ◽  
Correct Understanding

Learning science is a complex process and students develop limited understanding even after instruction. The aim of the research is to use students’ diagrams to assess conceptual understanding of science related to ‘light’ in grade eight students. Data were collected with the use of a written test, questionnaire and documents. Each question of the written test consisted of two parts; diagram and written explanation. Data obtained were analysed qualitatively and quantitatively. It was noted that students provided more than twenty different diagrams for each question instead of correct diagram. A large number of incorrect diagrams with incorrect explanations showed that students did not possess a correct understanding of concepts related to light. Responses to teacher questionnaire revealed that 98% of teachers provide opportunities for their students to draw diagrams to assess understanding of science. Students’ diagrams can be effectively used to assess conceptual understanding of science knowledge of secondary students.

De Algorithm Optimization Design Research and Numerical Simulation of a New Optical Fiber F-P Sensing System

2013 ◽  
Vol 710 ◽  
pp. 484-487
Author(s):  
Ning Shan ◽  
Tuan Jie Liu
Keyword(s):  
Numerical Simulation ◽  
Mathematical Model ◽  
Optical Fiber ◽  
Optimization Design ◽  
Design Research ◽  
Algorithm Optimization ◽  
Signal Attenuation ◽  
Practical Applications ◽  
Sensing System ◽  
De Algorithm

Optical fiber F-P sensor has several advantages, such as strong anti-interference ability, quick speed and high precision. It is widely applied in detecting fields. But optical fiber F-P sensor deviates from working point easily in practical applications, it leads to output signal attenuation and the decreasing of signal noise ratio. The double wavelength optical fiber F-P sensing system is designed to solve the problem. DE algorithm mathematical model of sensing system is established, meanwhile, a higher orthogonal precision sensing system is optimization designed. The orthogonal error of sensing system is studied. The results show that DE algorithm is correct and reliable. Its run time is shorter and the error is less than 10-3. The optimization objective decreases sharply. When the length of F-P cavity changes 0~2500nm, the orthogonal error of sensing system is less than 5%. It has higher stability and anti-interference ability. These results show that the DE algorithm can be used for the structural optimization design of optical fiber F-P sensor.

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