scholarly journals Using Dynamical Geometry Softwares in the study of Plane Geometry: potentialities and limitations

2020 ◽  
Vol 22 (5) ◽  
pp. 25-43
Author(s):  
José Luiz Rosas Pinho ◽  
Méricles Thadeu Moretti

Background: Some inconsistencies that appeared when teaching Geometry - using Dynamical Geometry Softwares - to Mathematics undergraduate students, inspired this work . Objectives: To stress the potentialities and, specially, the limitations of Dynamical Geometry Softwares in order of using it correctly by teachers, pre-service teachers and students for learning and teaching situations and investigations in Geometry. Design: Critical analysis study of situations, with examples produced using Dynamical Geometry Softwares, in order to reveal some inconsistencies with respect to the theory. In particular, Geogebra was the software used. Setting and participants: Some of the examples presented here, elaborated in GeoGebra, were briefly discussed in classes of pre-service teachers of mathematics aiming at an awareness of the inconsistencies that may appear using a Dynamical Geometry Software. The authors are the unique participants of the elaboration of those examples. Data collection and analysis: There was not data collection, but only elaboration of examples in order to provide some arguments for future discussions. Results: Examples production shows some limitations of Dynamical Geometry Softwares and that those limitations are insurmountable due to epistemological reasons. Conclusions: Awareness of Dynamical Geometry Software limitations is fundamental for its correct use. Those limitations do not invalidate the software potential. On the contrary, being conscious of both potentialities and limitations of a hardware is a necessary condition to a fruitful use of it.

2020 ◽  
Vol 22 (2) ◽  
pp. 122-133
Author(s):  
Camila Maria Sitko

Context: In general, teachers and students have distorted views about the functioning of a scientific work. This research uses the episode of the historical construction of the Second Law of Movement and seven distorted views on the subject. Objectives: This work aims to exemplify the distorted views students can construct about scientific endeavour if a didactic approach that does not consider the history and philosophy of science is used. Design: Seven distorted views regarding scientific work are explained and, subsequently, exemplified from the episode in question, showing how this history is seen, in general, in textbooks, and by most teachers. Environment and participants: This is a theoretical analysis, not including participants. The materials used were primary and secondary bibliographic sources. Data collection and analysis: Seven distorted views on science, from the episode of the historical construction of the Second Law of Movement, were collected, and a historical-philosophical reflection was carried out on them. Results: Following the presentation of the views and examples, criticism and allusion to how this episode should be treated are offered. Conclusions: Throughout the text, as well as in its final considerations, relevant aspects to be worked on in the classroom are discussed, for a critical view of the construction of scientific knowledge.


2021 ◽  
Author(s):  
Rosalina Pisco Costa ◽  
Beatriz Roque ◽  
Vanessa Carreira

This paper addresses  the methodology of Design Thinking and its applicability as a creative methodology when teaching and learning Sociology of Childhood in a higher education context. Students were asked to develop an exercise in order to expand and deepen the theoretical and conceptual knowledge discussed in theoretical classes. Active and creative methodologies were specifically and purposefully designed to develop the ability to think critically about the problems presented, stimulating debate and sociological imagination. Inspired by the Mindshake Design Thinking Model Evolution 6², practical classes were organized and oriented towards specific techniques, namely the “Inspiration Board”, “Intent Statement” and “Insight Clustering”, following, respectively, the phases of exploration, data collection and analysis and interpretation of results. Illustration is given through the development of a research itinerary committed to think, discuss and creatively research the meanings of the “dark” and “darkness” of the night for children. Incorporating Design Thinking in the teaching and learning process in the field of social sciences, namely when researching children and childhood from a sociological perspective, proved to be a both fruitful and engaging tool both for teachers and students. 


Author(s):  
Ratna Putri Aulia ◽  
Ahmad Taufiq ◽  
Muh. Arafik

Abstract: This research aims to provide a contribution for students and teachers of grade 1, as well as for schools. The purpose of the research for students is to provide students with a learning experience in writing cursive letters and foster students’ enthusiasm for learning and improving cursive writing skills. Another research which is to become input for teachers in overcoming students' difficulties when learning to write cursive letters, can also be used by teachers as a reference for the development of learning to write cursive letters and can increase teacher’s creativity in managing learning to write cursive letters. For schools, this research aims to assist in improving the quality of education. The type of research used is Classroom Action Research (CAR). The subjects of this research namely teachers and students of grade 1, as well as the principal. Data collection techniques used are observation, tests, interviews, and documentation. Data analysis techniques used in the form of qualitative data analysis and quantitative data analysis. For the analysis of qualitative data obtained from data collection and analysis of quantitative data obtained from the processed results of the writing test in cursive with the SAS method. The result of research obtained showed that the percentage of student learning completeness in implementation of the second cycle reached 77,8 percent. Previously, precycle and first cycle activities were carried out, each of which the percentage of learning completeness was only 18,5 percent and 37 percent, and increased in the implementation of the second cycle. This shows that the application of the SAS method can improve the cursive writing skills of grade 1 students. Suggestion for students in the result of this study, namely that students should focus and actively ask the teacher when learning to write cursive letters, so that they can improve their writing skills. In addition, suggestions for teachers should use variations in learning so that students are more enthusiastic about writing cursive letters, and also give more attention to students who have not yet completed writing cursive letters. Abstrak: Penelitian ini bertujuan untuk memberikan kontribusi bagi siswa dan guru kelas 1, maupun bagi sekolah. Tujuan penelitian bagi siswa, yaitu dapat memberikan pengalaman belajar siswa dalam menulis huruf tegak bersambung dan menumbuhkan semangat belajar siswa untuk meningkatkan keterampilan menulis huruf tegak bersambung. Tujuan penelitian lainnya, yaitu menjadi bahan masukan untuk guru dalam mengatasi kesulitan siswa saat pembelajaran menulis huruf tegak bersambung, juga dapat dimanfaatkan oleh guru sebagai salah satu acuan untuk pengembangan pembelajaran menulis huruf tegak bersambung, dan dapat meningkatkan kreativitas guru dalam mengelola pembelajaran menulis huruf tegak bersambung. Bagi sekolah, penelitian ini bertujuan untuk membantu dalam meningkatkan mutu pendidikan. Jenis penelitian yang digunakan, yaitu Penelitian Tindakan Kelas (PTK). Subjek penelitian ini, yaitu guru dan siswa kelas 1, serta kepala sekolah. Teknik pengumpulan data yang digunakan yakni observasi, tes, wawancara, dan dokumentasi. Teknik analisis data yang digunakan berupa analisis data kualitatif dan analisis data kuantitatif. Untuk analisis data kualitatif diperoleh dari pengumpulan data dan analisis data kuantitatif diperoleh dari olahan hasil tes menulis huruf tegak bersambung dengan metode SAS. Hasil penelitian diperoleh persentase ketuntasan belajar siswa pada pelaksanaan siklus II yang mencapai 77,8 persen. Sebelumnya, dilakukan kegiatan pra siklus dan siklus I yang masing-masing perolehan persentase ketuntasan belajar hanya 18,5 persen dan 37 persen, dan meningkat pada pelaksanaan siklus II. Hal ini menunjukkan bahwa penerapan metode SAS ini dapat meningkatan keterampilan menulis huruf tegak bersambung siswa kelas 1. Saran bagi siswa dalam hasil penelitian ini, yaitu sebaiknya siswa fokus dan aktif bertanya kepada guru saat pembelajaran menulis huruf tegak bersambung, sehingga dapat meningkatkan keterampilan menulisnya. Selain itu, saran bagi guru sebaiknya menggunakan variasi dalam pembelajaran agar siswa semakin bersemangat untuk menulis huruf tegak bersambung, dan juga memberikan perhatian lebih kepada siswa yang belum tuntas dalam menulis huruf tegak bersambung.


English for Academic Purposes course focusing on the academic language needs of students is a subfield of English for Specific Purposes (ESP). It is a type of specialized course to integrate specific subject matter, language content, and material based on learners’ needs. The study aims to evaluate the British Council’s English for Academic Purposes (EAP) coursebook in terms of content, sequencing, learners’ autonomy, motivation, feedback and focus on language skills. Furthermore, the study tries to provide a general perception of the usefulness and effectiveness of the coursebook for undergraduate students. The EAP Students’ Manual coursebook is used as a primary source for the data collection. The researcher has chosen Nation & Macalister (2010) model of language teaching principles to analyze and discuss the data. The study found the coursebook a useful, effective and an appropriate source of English language learning in terms of the investigated aspects of the book. The findings report that the coursebook provides practice and practical usage in all domains of the academically required English language skills. It helps the students to build language competency and to be more independent learners. In addition, it provides an opportunity to the learners to think in the target language, use the language more practically and learn it in a natural type of environment. The study concludes and suggests that the content needs to be supplemented with English language audios and videos presenting the students relevant documentaries and helping material in order to make the coursebook and the learning process more useful, effective, interesting and motivating. Furthermore, the study recommends that while choosing /designing a coursebook for a certain course, it needs to be evaluated following the various criteria and language-teaching-principles suggested by different language researchers.


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