scholarly journals Exploring University Mexican Students’ Quality of Intra-Mathematical Connections When Solving Tasks About Derivative Concept

2021 ◽  
Vol 17 (9) ◽  
pp. em2006
Author(s):  
Camilo Andrés Rodríguez-Nieto ◽  
Flor Monserrat Rodríguez-Vásquez ◽  
Javier García-García
Keyword(s):  
Mexican Students ◽  
Mathematical Connections ◽  
Derivative Concept

scholarly journals Promoting the Self-Determination of Mexican Young Adults Identified with Intellectual Disability: A Sociocultural Discourse Analysis of Their Discussion about Goal Setting

2020 ◽  
Vol 9 (11) ◽  
pp. 200
Author(s):  
Ana Luisa Rubio-Jimenez ◽  
Ruth Kershner
Keyword(s):  
Young Adults ◽  
Intellectual Disability ◽  
Discourse Analysis ◽  
Goal Setting ◽  
Education Programme ◽  
The Self ◽  
Self Determination ◽  
Mexican Students

Self-determination is the product of the individuals’ volition in interaction with their environment. Enhancing the self-determination of young adults with intellectual disability (ID) has been related to positive adult outcomes. Educational programmes to promote self-determination commonly rely on the interaction between students and educators to set goals and make plans to achieve them. Yet the quality of these interactions has been little studied. This research involves Mexican students identified with ID who had accessed universities through the education programme: Building Bridges. The paper presents findings of a sociocultural discourse analysis of the conversations that arose when three students, a teacher and a facilitator discussed courses of action to achieve the students’ “Challenge of the Month” goals. We discuss how the student’s goal setting could be supported and hindered in these conversations. Potential constraints on students’ goal setting are noted when discussions of concrete courses of action are prioritized over discussions that would lead students to reflect more deeply on the motives behind their goals.

scholarly journals The nature and quality of the mathematical connections teachers make

Pythagoras ◽  
2012 ◽  
Vol 33 (1) ◽  
Author(s):  
Michael K. Mhlolo ◽  
Hamsa Venkat ◽  
Marc Schäfer
Keyword(s):  
Mathematics Education ◽  
Instructional Practices ◽  
Cognitive Processes ◽  
Mathematical Understanding ◽  
Mathematical Connections ◽  
Video Recordings ◽  
Teacher’S Role ◽  
High Level ◽  
Grade 11

Current reforms in mathematics education emphasise the need for pedagogy because it offers learners opportunities to develop their proficiency with complex high-level cognitive processes. One has always associated the ability to make mathematical connections, together with the teacher’s role in teaching them, with deep mathematical understanding. This article examines the nature and quality of the mathematical connections that the teachers’ representations of those connections enabled or constrained. The researchers made video recordings of four Grade 11 teachers as they taught a series of five lessons on algebra-related topics. The results showed that the teachers’ representations of mathematical connections were either faulty or superficial in most cases. It compromised the learners’ opportunities for making meaningful mathematical connections. The researchers concluded by suggesting that helping teachers to build their representation repertoires could increase the effectiveness of their instructional practices.

scholarly journals Development Of Teaching Materials With Dayak Kanayatn Traditional Tool Context On Mathematical Connection Ability In Class V Students Of SD Negeri 06 Ngabang

2020 ◽  
Vol 8 (1) ◽  
pp. 81
Author(s):  
Jesica Esha Risty ◽  
Muhamad Firdaus ◽  
Hartono Hartono
Keyword(s):  
Mathematics Teaching ◽  
Teaching Material ◽  
Design Development ◽  
Teaching Materials ◽  
Class V ◽  
Is Research ◽  
Mathematical Connections ◽  
D Model ◽  
Mathematical Connection

This study aims to develop and assess the quality of mathematics teaching materials with the context of traditional Dayak Kanayatn tools on the ability of students' mathematical connections on valid, practical, and effective two dimentional figure. The type of research used is Research & Development (R&D) research with reference to the 4-D model, namely Define, Design, Development, and Disseminate. The test subjects in this study were grade V students of SD Negeri 06 Ngabang with a total of 22 students. Based on the results of limited trials conducted, it was found that 1) the results of the validation of teaching materials were 76.97% in the valid category, 2) the results of practicality based on observations of the implementation of teaching materials developed showed that teaching materials with very practical categories, 3) the results of the effectiveness of the materials teaching is 73.33% with the effective category. So it can be concluded that at the limited trial stage a mathematics teaching material is carried out in the context of the traditional Dayak Kanayatn tool that has met the criteria of validity, effectiveness, and effectiveness of the ability of mathematical connections

scholarly journals Pre-service Mathematics Teacher's Mathematical Connections in the Context of Problem-Solving About the Derivative

2021 ◽  
Vol 12 (1) ◽  
pp. 202-220
Author(s):  
Camilo Andrés Rodríguez-Nieto, Flor Monserrat Rodríguez-Vásquez, Javier García-García
Keyword(s):  
Problem Solving ◽  
Data Collection ◽  
Conceptual Framework ◽  
Mathematics Teachers ◽  
Thematic Analysis ◽  
Analysis Method ◽  
Structured Interviews ◽  
Mathematical Connections ◽  
Future Practice ◽  
Derivative Concept

The mathematical connections made by five Pre-Service Mathematics Teachers (PSMTs) when solving problems on the derivative were analyzed. The conceptual framework used was the typology of intra-mathematical connections. For data collection, semi-structured interviews were conducted, and a questionnaire was designed, which included three tasks about of the derivative, which were analyzed through the thematic analysis method. The results showed that PSMTs made mathematical connections: meaning, different representations, procedural, part-whole, implication and feature. We identified that the PSMT's difficulties in establishing connections are caused by the meaning they have on the derivative concept, acquired in their received teaching and, if they are not attended, they can be reproduced in their future practice as in-service teachers.

scholarly journals Teaching Derivative Concept Using 6 Questions Cognitive Model

2021 ◽  
Vol 1 (3) ◽  
pp. 127-137
Author(s):  
Xiaofeng Lan ◽  
Zhou Ying
Keyword(s):  
Teaching And Learning ◽  
Mathematics Learning ◽  
Cognitive Model ◽  
Learning Model ◽  
Learning Activities ◽  
Advanced Mathematics ◽  
Development Method ◽  
New Learning ◽  
Derivative Concept

Derivative is one of the basic concepts of calculus, has an extremely rich practical background and wide application. However, "low exploration" of the limit thought in teaching and learning activities have caused difficulties in future advanced mathematics learning. The purpose of this study is to create a learning model that helps students understand calculus. The method in this research is using research and development method, designing a learning model using 6 questions cognitive model on derivative material. Based on the results of developing a new learning model in this study using the six questions cognitive model to explore mathematics from the six dimensions of "from where", "what ", "why", "how", "what if it changed" and "think about it", The teaching and learning activities when teaching derivative under the cultural background reflects the continuity, naturalness and order of teaching. The results of this study indicate that 6 question cognitive models can help students learn the basic concept of calculus. The results of this study can be implemented by teachers in schools to improve the quality of high school student learning

scholarly journals LEARNING KNOWLEDGE OF TEACHERS OF MATHEMATICS TO EXPLAIN THE DIFFERENCE BETWEEN THEORETICAL ADVICE AND SCHOOL PRACTICE WITH THE HELP OF LINKING ASSIGNMENTS

2021 ◽  
Vol 6 (2(25)) ◽  
pp. 21-26
Author(s):  
R. Magsar ◽  
B. Hadbaatar
Keyword(s):  
Secondary School Teachers ◽  
School Teachers ◽  
School Practice ◽  
Mathematical Connections ◽  
Study And Teaching ◽  
Different Types ◽  
Basic Quality ◽  
Teaching Of Mathematics ◽  
The Difference

This research is based on the theory that mathematical connections are established by solving problems in different ways in the study and teaching of mathematics. Based on one-on-one interviews with 12 secondary school teachers in Mongolia and two group meetings, we showed that the difference between theoretical advice and school practice in a multitasking environment depends on the basic quality of the teachers’ knowledge. A complex relationship has been revealed between different types of teachers’ knowledge.

scholarly journals Bullying and health-related quality of life in children and adolescent Mexican students

2018 ◽  
Vol 23 (7) ◽  
pp. 2433-2441 ◽  
Author(s):  
Carlos Alejandro Hidalgo-Rasmussen ◽  
Guadalupe Ramírez-López ◽  
Luis Rajmil ◽  
Anne Skalicky ◽  
Alfredo Hidalgo-San Martín
Keyword(s):  
Quality Of Life ◽  
Individual Characteristics ◽  
Social Adaptation ◽  
Cross Sectional ◽  
Children And Adolescent ◽  
Mexican Students ◽  
Related Quality ◽  
Health Related ◽  
Lower Hrqol

Abstract Previous studies have reported a relationship between being a victim of bullying, but no studies have been carried out with Mexican students; notwithstanding the high scores of bullying in Mexico in international rankings. The objective of this study was to analyze the association between being a victim of bullying and lower HRQoL among schoolchildren and adolescents in Mexico. This cross-sectional and correlational study involved 2225 students from 22 elementary, middle and high schools. HRQoL was assessed with the KIDSCREEN-10 questionnaire and bullying with the social adaptation dimension of KIDSCREEN-52. Bivariate associations were evaluated, and a multivariate logistic regression was utilized. The prevalence of victims of bullying was 17.3%. Being a victim of bullying was double the risk of having a lower HRQoL than not being a victim after adjusting for health perception, gender and age, OR 2.3 (1.7-3.1). As the Wilson and Cleary Model of Quality of Life explains, individual characteristics, such as, being a victim of bullying are associated with quality of life. Similar findings in the existing literature imply that bullying is a global phenomenon that impacts the victimized child or adolescent’s life in different ways.

Immunoferritin localization of intracellular antigens in positively stained frozen sections

1978 ◽  
Vol 36 (2) ◽  
pp. 168-169
Author(s):  
K. T. Tokuyasu
Keyword(s):  
Surface Tension ◽  
Water Surface ◽  
Thin Layers ◽  
The Other ◽  
Positive Staining ◽  
Frozen Sections ◽  
The Past ◽  
Ultrathin Frozen Sections ◽  
Definition Of

During the past investigations of immunoferritin localization of intracellular antigens in ultrathin frozen sections, we found that the degree of negative staining required to delineate u1trastructural details was often too dense for the recognition of ferritin particles. The quality of positive staining of ultrathin frozen sections, on the other hand, has generally been far inferior to that attainable in conventional plastic embedded sections, particularly in the definition of membranes. As we discussed before, a main cause of this difficulty seemed to be the vulnerability of frozen sections to the damaging effects of air-water surface tension at the time of drying of the sections.Indeed, we found that the quality of positive staining is greatly improved when positively stained frozen sections are protected against the effects of surface tension by embedding them in thin layers of mechanically stable materials at the time of drying (unpublished).

Lithography below 100 nm

1983 ◽  
Vol 41 ◽  
pp. 96-99
Author(s):  
L. D. Jackel
Keyword(s):  
Spatial Distribution ◽  
Electron Beam ◽  
Electron Scattering ◽  
Electron Beam Lithography ◽  
Substrate Material ◽  
Local Electron ◽  
Electron Dose ◽  
Positive Resist ◽  
Exposure Process

Most production electron beam lithography systems can pattern minimum features a few tenths of a micron across. Linewidth in these systems is usually limited by the quality of the exposing beam and by electron scattering in the resist and substrate. By using a smaller spot along with exposure techniques that minimize scattering and its effects, laboratory e-beam lithography systems can now make features hundredths of a micron wide on standard substrate material. This talk will outline sane of these high- resolution e-beam lithography techniques.We first consider parameters of the exposure process that limit resolution in organic resists. For concreteness suppose that we have a “positive” resist in which exposing electrons break bonds in the resist molecules thus increasing the exposed resist's solubility in a developer. Ihe attainable resolution is obviously limited by the overall width of the exposing beam, but the spatial distribution of the beam intensity, the beam “profile” , also contributes to the resolution. Depending on the local electron dose, more or less resist bonds are broken resulting in slower or faster dissolution in the developer.

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