Braceros, Mexicans, Americans, and Schools: (Re) imagining Teaching and Learning in Mexican America

This article examines the stories of Braceros, Mexican contract workers who participated in an international labor agreement between the United States and México between 1942 and 1964. The stories Braceros tell challenge some conventional historiographical notions that they were powerless agents and victims of exploitative labor practices. The stories shed new light regarding the kinds of agency and power Braceros actually displayed in negotiating certain circumstances specific to their work

MODELING AND PROJECTS: HEALTHY EATING, ENVIRONMENTAL AWARENESS AND PROPOSING A THEME

This work presents a proposal of modeling activities designed and implemented in a seventh-level course (12 years old). The activities include three phases: understanding modeling, modeling itself, and formulating modeling projects. These phases are intended to facilitate the modeling process. The activities are contextualized in themes of interest: healthy eating, awareness of the garbage produced, and the third phase, student proposals of a theme and problem. These proposals emphasize the development of contextualized problems where the mathematics emerge naturally from the themes. The aim of the study was to understand the difficulties and potentialities of implementing the modeling activities and was approached through a qualitative research, collecting data from the students' productions, and an interview with the course teacher. Grounded theory was used to analyze the data, from which categories emerged relating to students’ and teachers’ difficulties and potentialities. Results indicate that, on one hand, the proposal allowed students to visualize the mathematical difficulties and thus, support them; on the other hand, working with contextualized situations allowed the students to participate in the activities and develop communication and complementary skills. These activities allowed students to relate mathematics to real-life situations, visualizing its importance and identifying how it can be used in diverse contexts.Este trabalho apresenta uma proposta de atividades de modelagem elaboradas e implementadas em um curso de sétimo nível (12 anos). As atividades incluem três fases: compreensão da modelagem, modelagem e formulação de projetos de modelagem. Essas fases têm como objetivo facilitar o processo de modelagem. As atividades são contextualizadas em temas de interesse: alimentação saudável, conscientização sobre o lixo produzido e, na terceira fase, propostas dos alunos sobre um tema e problema. Essas propostas enfatizam o desenvolvimento de problemas contextualizados em que a matemática emerge naturalmente dos temas. O objetivo do estudo foi compreender as dificuldades e potencialidades de implementação das atividades de modelagem e foi abordado por meio de uma pesquisa qualitativa, com coleta de dados nas produções dos alunos e entrevista com a professora do curso. Para a análise dos dados, utilizou-se a Grounded Theory, de onde emergiram categorias relativas às dificuldades e potencialidades de alunos e professores. Os resultados indicam que, por um lado, a proposta permitiu aos alunos visualizar as dificuldades matemáticas e, assim, apoiá-las; por outro lado, trabalhar com situações contextualizadas permitiu aos alunos participarem nas atividades e desenvolverem competências comunicativas e complementares. Essas atividades permitiram aos alunos relacionar a matemática com situações da vida real, visualizando sua importância e identificando como ela pode ser usada em diversos contextos

Modeling and projects: healthy eating, environmental awareness and proposing a theme

This work presents a proposal of modeling activities designed and implemented in a seventh-level course (12 years old). The activities include three phases: understanding modeling, modeling itself, and formulating modeling projects. These phases are intended to facilitate the modeling process. The activities are contextualized in themes of interest: healthy eating, awareness of the garbage produced, and the third phase, student proposals of a theme and problem. These proposals emphasize the development of contextualized problems where the mathematics emerge naturally from the themes. The aim of the study was to understand the difficulties and potentialities of implementing the modeling activities and was approached through a qualitative research, collecting data from the students' productions, and an interview with the course teacher. Grounded theory was used to analyze the data, from which categories emerged relating to students’ and teachers’ difficulties and potentialities. Results indicate that, on one hand, the proposal allowed students to visualize the mathematical difficulties and thus, support them; on the other hand, working with contextualized situations allowed the students to participate in the activities and develop communication and complementary skills. These activities allowed students to relate mathematics to real-life situations, visualizing its importance and identifying how it can be used in diverse contexts

Labor supply response to income taxation in Mexico

Resumen: El presente artículo examina el efecto de las tasas marginales del impuesto sobre la renta en el mercado laboral en México, utilizando una versión modificada del modelo de tributación sobre la renta personal de Rosen (1976). El estudio analiza las reacciones de los trabajadores asalariados del sector formal ante los cambios en la tasa marginal del impuesto sobre la renta. Prestamos especial atención a la muestra, con el fin de controlar en nuestros cálculos el problema del alto índice de evasión fiscal en México. Comprobamos como las horas de trabajo disminuyen cuando las tasas marginales del impuesto sobre la renta aumentan. Abstract: This paper examines the effect of marginal income tax rates on labor supply in Mexico using a modified version of Rosen´s (1976) personal income taxation model. The study analyzes how salaried workers of the formal sector react to changes in the marginal income tax rate. Special attention is given to the sample, in order to control the problem of the high level of tax evasion in Mexico in our estimation. We find evidence that hours of work diminish when marginal income tax rates increase

Algunas reflexiones sobre la enseñanza de la estadística

In this work we present some elements that help in the reflection about the teaching and learning of Statistics in careers related to Health in the UCM. Nowadays Statistics is conceived as a transversal science, with application in several fields of knowledge. It is convenient to make efforts so that the students regard and assume Statistics as a way to reflect and have them understand that it is an important element for the communication of professionals of different areas.En este trabajo se presentan algunos elementos que ayudan a la reflexión sobre la enseñanza y aprendizaje de la Estadística en carreras de la salud de la Universidad Católica del Maule. En la actualidad la Estadística se concibe como una ciencia transversal, con aplicación en diversos campos del conocimiento. Es conveniente realizar esfuerzos para que los estudiantes miren y asuman la Estadística como una forma de reflexionar y comprendan que constituye un elemento importante para la comunicación entre profesionales de distintas áreas

Análisis narrativo histórico de los últimos momentos del General Bernardo Reyes

Esta investigación expone el período transcurrido después de aquel 6 de noviembre de 1911, cuando Francisco I. Madero había protestado como presidente. Un nuevo movimiento armado contra su gobierno, ahora definitivo, estalló en febrero de 1913. El movimiento lo encabezaron Manuel Mondragón, Félix Díaz y Bernardo Reyes. Pretendían tomar Palacio Nacional, apresar al presidente Madero para que el general Bernardo Reyes tomara el poder y dar un nuevo giro al rumbo del país. Entre los golpistas de hacendados y empresarios figura la presencia de Rodolfo Reyes, hijo del general Reyes, quien trató de persuadir a su padre de que algo andaba mal. Efectivamente, la suerte estaba escrita

Free Trade and Pollution in the Manufacturing Industry in Mexico : A Verification of the Inverse Kuznets Curve at a State Level

There has been a long debate about the effects that free trade has on pollution. Most empirical analysis on this topic has focused at the national level. The objective of this study is to see if there is a relationship between the pollution generated by the manufacturing industry in each of Mexico’s 32 states and the North American Free Trade Agreement (NAFTA). This was done via panel data regression models using information on pollution, income, and degree of trade from each of the states for the years 1993 and 2000. The pollution index level was constructed using the Industrial Pollution Projection System from the World Bank. In general we found a positive relationship between trade liberalization and pollution caused by manufacturing. Furthermore, we found that income and pollution follow the relationship expressed in the Environmental Kuznets Curve.Free Trade, Pollution in manufacturing industry, Environmental Kuznets Curve, State-level data

Procedimientos de conciliación fiscal accesibles al particular que preve el código fiscal de la federación

Tesis ( Maestría en Derecho Fiscal ) U.A.N.L.UANLhttp://www.uanl.mx

Contaminación como uno de los determinantes de la migración: evidencia para México = Pollution as one of the determinants of migration: evidence for Mexico

Resumen: Diferentes variables han sido propuestas para explicar el fenómeno de la migración; recientemente se ha incluido el deterioro ambiental como una causal cada vez más presente. Según Jha y Whalley (2003), esto puede demostrarse teóricamente a partir del modelo tradicional de Harris-Todaro (1970) sobre migración rural y urbana, en el cual la variable desempleo, si se interpreta como daño, puede remplazarse por la contaminación. En el presente trabajo, a partir de un modelo en corte transversal, se da evidencia para México a la afirmación de Jha y Whalley, al encontrar una relación positiva entre migración y contaminación. Abstract: Different variables have been proposed to explain the migration phenomenon; recently, environmental degradation has been increasingly prevalent in the literature as a determinant of migration. According to Jha and Whalley (2003), the environment-migration relationship can be theoretically demonstrated using the traditional Harris-Todaro (1970) model of rural and urban migration, in which the unemployment variable, if interpreted as damage, can be replaced by pollution. Using a cross-section model we present, in this study, evidence for Mexico to support Jha and Whalley, finding a positive relationship between migration and pollution