ISSN 0187-893X       ISSNE 1870-8404
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Contents No.1 2016




José Antonio Chamizo   1 - 2
The unfortunate death of Andoni Garritz represents a formidable challenge for Chemical Education. In more than five decades of existence, it was almost a personal company, ended up being an institutional bulwark. Chemistry education before anything else, the journal of the Faculty of Chemistry of the National Autonomous University of Mexico.


The role of Argumentation on Conceptual Change and its relation with Lakatos’ epistemology

Rosária Justi, Marina Martins, Paula Cristina Cardoso Mendonça   3 - 14
The general aim of this paper is analyse the role of argumentation on students’ conceptual change process. In order to do so, we used Lakatos’ theoretical framework to base the analysis of data gathered in a modelling-based teaching of intermolecular interactions. Data were gathered from video recordings of all lessons involving such learning in a grade 11th class, the researcher’s field notes, and the copy of all written activities produced by students.


A green multicomponent reaction in the organic chemistry laboratory

Mariana Ingold, Gloria V. Lopez, Rosina Dapueto, Williams Porcal   15 - 20
In this century, chemists find themselves with a new challenge. They need to efficiently generate materials to maintain quality of life, but they have to do so reducing the negative effects on the environment and human health. Teaching green chemistry is fundamental to promote future scientists who can create safely and efficiently non-toxic products and processes in the way for a sustainable future. The use of a multicomponent reaction, as the Passerini reaction, for the generation of new molecules as drug candidates, is describedhere as an experiment for undergraduate organic chemistry laboratory. It is a fast, efficient andsimple process which generates a complex product using simple reactants in one step. Differentmetrics were determined in order to measure how environmentally friendly this reaction is, inthe conditions tested. The student will be able to discuss: green chemistry, development ofbioactive molecules, diversity-oriented synthesis, multicomponent reactions, and chemistry inaqueous solution.


Fitting chemical data with Excel: A practical tutorial

Angela Alcázar, José Marcos Jurado, Jorge González, Roberto Muñiz-Valencia, Silvia Guillermina Ceballos-Magaña   21 - 29
Excel is spreadsheets software included in Microsoft Office that is used in a high number of public and private companies all over the world. This program allows carrying out many operations such as fitting experimental data to mathematical functions. These tasks are usually performed in chemical laboratories and, accordingly, it seems reasonable to train professionals in the use of these tools. In this work, four fitting methodologies using this program have been studied by solving some practical examples of chemical data, considering their advantages and disadvantages.


The flowchart as a traffic light on ecological security of laboratory experiments

Adolfo Obaya Valdivia, Anabel Hernández Escamilla, Guadalupe Iveth Vargas Rodríguez, René Miranda Ruvalcaba, Suemi Lima Vargas, Yolanda Marina Vargas   30 - 36
In this paper a comprehensive metric that allows the assess to the greenness of the experiments from the flowchart is presented. The corresponding diagram integrates the treatment and disposal of waste, in addition are considered risks to health, the environment and security using pictograms and safety of reactive rhombuses, auxiliary substances, products and wastes. A letter from 13 colors (from red to green) is also shown in RGB and CMYK systems indicating the number of principles of green chemistry that meets each experiment, and which are used as background color in the diagram components.


Studying the importance of soil organic matter: An educational proposal for secondary education

Daniel Zuazagoitia, José Domingo Villarroel   37 - 42
Although the importance of including in the curriculum of all educational levels issues related to soil science has been strongly highlighted, the fact is that the importance that the quality and availability of organic matter in the quality of soil have received very little attention when it comes to considering educational practices in classrooms. This paper brings an educational proposal for teaching the transcendence of organic matter in soil at secondary level. The learning unit presented is based on essential chromatography techniques and allows the qualitative study of soil organic matter. The ultimate purpose is to offer basic educational tools for reflection on the implication that soil has in order to maintain biodiversity and food production.


Didactic strategies in teaching-learning: In respect to the study of nomenclatureof organic chemistry in students of the Atotonilco Regional High School)

Eduardo Zaragoza Ramos, Luis Mexitli Orozco Torres, José Oswaldo Macías Guzmán, María Elena Núñez Salazar, Raúl Gutiérrez González, Diógenes Hernández Espinosa, Claudia Luz Navarro Villarruel, Marcela de Alba Ritz, Rosa Marisela Villalobos Díaz, Norma Alicia Gómez Torres, Rosario Isabel Cerda Vázquez, Alma Delia Gutiérrez Hernández, Karla Anahí Pérez Aviña   43 - 51
This research aims to implement the ludic like teaching-learning strategy in respectto the subject Chemistry II of the General Baccalaureate (pre-university studies) by Competen-cies which operates in Atotonilco Regional High School at the University of Guadalajara.For this purpose an integrating activity is performed in the thematic content of functionalgroups of organic chemistry that includes this teaching-learning technique. Therefore, an eva-luation of corresponding thematic contents is carried out and through a test resolution like thetwo school cycles before (2013-B and 2014-A). At last, a variance analysis to 95% of trust isachieved to compare the gotten average by the students in the mentioned school cycles andthe 2014-B.The results indicate the increase in the corresponding average to school cycle 2013-B by12.08 points and school cycle 2014-A by 22.03 points. This suggests that ludic like didactic toolcan facility the teaching-learning process of this science.


Getting to the CoRe of it: A review of a specific PCK conceptual lens in science educational research

Adam Bertram, Louise Lehane   52 - 58
Since its introduction, pedagogical content knowledge (PCK) has been widely written about in the science education research literature. It has served as an alluring concept amongst many of the discussions on the teaching and learning of science. This paper reviews and draws together empirical research on a specific PCK lens, consisting of two tools: a Content Represen- tation (CoRe) and Pedagogical and Professional Experiences Repertoires (PaP-eRs). Both tools were originally developed by Loughran et al. (2006) and have since been used by a variety of educational researchers and practitioners within their own contexts. This paper seeks to present how CoRes and PaP-eRs have helped conceptualise and advance PCK research, including the impact this has had on the professional practice of teachers. This paper, in so doing, also demonstrates how this PCK lens can facilitate effective teaching and learning in science education.


Using platform for students in General Chemistry

Christian Arce, María Verónica Frías, Patricio Flores-Morales   59 - 66
Learning chemistry at university level has become every day a less attractive field for first year students. They have little interest in the subject and they are prone to fail. In that regard, new methodologies based on teaching innovation have become an ally for students. In this work, a teaching innovation case is presented using platform. The platform possess a friendly environment and has been designed to have an immediately feedback of students’ progress when they use their own mobile devices. The results show that studentsrapidly adopt the platform since they are digital natives. They are prone to answer the chemicalquestion through their touch devices due to they are able to remain anonymous. Thus, they donot have to solve exercises on the board. They recognize that the platform helped them passthe course and get excited about the fact extend this to other subjects.


The development of chemistry as a discipline in Argentina, Mexico y Colombia: A comparative study

Gabriel Augusto Matharan   67 - 73
This paper seeks to understand the institutional and cognitive features of the development of chemistry as a discipline in Latin America. With this purpose, a comparative study between Argentina, Colombia and Mexico has been carried out. We show that the history of chemistry in these countries can be divided into 3 stages: first, the institutionalization of teaching as a distinct discipline by a creation of a university chemical degree and the differentiation from pharmacology; second, the creation of national chemical organization; and finally, the professionalization of chemical research. The work aims to show how the development of chemistry in these countries involved a distinct sequence in its institutionalization in the tea-ching, practice and research.


The material culture in the Chemistry lecture and cabinet of the National Preparatory School at the end of 19th century

Felipe León Olivares   74 - 81
The aim of this paper is to analyze the Chemistry lecture and cabinet in the Escuela Nacional Preparatoria (ENP by its acronym in Spanish) at the end of 19th century. Nowadays, the ENP is part of the Universidad Nacional Autónoma de México’s (UNAM by its acronym in Spanish) high school subsystem. On one hand, the study to show the material culture of the ENP’s Chemistry cabinet, as part of the Chemistry lecture and the lecturer’s academic formation. On the other hand, the books that were used during the lectures between the years 1867 and 1900. Finally, the work is based on archive work, such as the UNAM’s Historic Archive through the Fondo Escuela Nacional Preparatoria. Furthermore, the UNAM’s Archivo Histórico de la Antigua EscuelaNacional de Medicina (AHAENM by its acronym in Spanish), particularly the student’s Files.


Louis Édouard Grimaux

Jaime Wisniak   82 - 90
Louis Édouard Grimaux (1835---1900), a French physician and pharmacist, devoted most of his efforts to the synthesis and properties of a large variety of organic compounds, the ureic series, alkaloids, nitrogen cyclic compounds, aromatic aldehydes, etc. He synthesized citric acid and a variety of colloids, albumins, and carbon hydrates. His open support of the innocence of Alfred Dreyfus led to his dismissal from the École Polytechnique, then under the rule of the Ministry of War.