789 resultados para Tabelas de contingência


Relevância:

10.00% 10.00%

Publicador:

Resumo:

Este trabalho investiga a utilização da Visão Baseada em Recursos, tendo por objetivo propor um modelo de gestão de pessoas que atenda a exigibilidade da qualidade de prestação de serviços à saúde. São observadas as relações de trabalho nesses serviços nas diversas modalidades, a sistematização do conhecimento sobre os elementos que figuram na gestão de pessoas e a verificação da necessidade de Gestão Operacional e Estratégica de Pessoas para trabalhadores das Instituições de Saúde Hospitalares Públicas. Trata-se de pesquisa de natureza empírico-exploratória, apoiada em múltiplos casos de hospitais públicos, entrevistando e registrando fatos observados nos locais pesquisados, aplicando-se o Protocolo de Observações. Para atingir o objetivo principal, são utilizados os fundamentos das obras de Marras (2001; 2003 e 2005): Relações Trabalhistas no Brasil: administração e estratégia; Administração de Recursos Humanos: do operacional ao estratégico; e Gestão de Pessoas em Empresas Inovadoras, respectivamente. Além das observações participantes, utilizaram-se entrevistas e questionários com os usuários e profissionais dos hospitais, com instrumentos adaptados para o contexto da instituição e dado tratamento estatístico para análise dos resultados, que se apresentam em tabelas para melhor visualização dos dados e análise. A Gestão de Pessoas nas ISHP permanecem no modelo tradicional e longe de qualquer movimento que possa torná-la estratégica. O nível de satisfação dos pacientes para com os profissionais de saúde é ótimo, mas quanto aos recursos e infra-estrutura, é baixo. Os profissionais de saúde na quase sua totalidade trabalham por vocação, espírito de humanização e por acharem gratificante, embora o nível de insatisfação com a remuneração recebida seja elevado.(AU)

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Este estudo é uma tentativa de promover uma partilha de perspectivas entre o neo-pragmatismo do filósofo Richard Rorty, mormente a partir das obras Filosofia e o espelho da natureza e Contingência, Ironia e Solidariedade e a Teologia da Libertação, em seu mais proeminente representante, Juan Luis Segundo, com o foco principal nas obras Libertação da teologia e O dogma que liberta. Desenvolve-se aqui uma aproximação de olhares para a verdade e a revelação, concebendo-as como processos pedagógicos. A verdade, como conceito não apenas religioso, do que se busca para dar sentido ao mundo e a vida humana e a revelação, como uma experiência marcada pela linguagem e expectativas religiosas de significado existencial são experiências similares e constituem-se não como o resultado de um processo de aprendizagem, mas como o processo em si mesmo, aberto e em constante renovação. A verdade, assim, não seria aonde se chega, mas os caminhos pelos quais se vai. Encontrar os pontos de contato e as possíveis mútuas contribuições do pensamento do filósofo Richard Rorty, e sua filosofia edificante, e do teólogo Juan Luis Segundo, e sua ideia de revelação como processo pedagógico, será meu esforço de aproximação entre suas proposições e a construção de uma proposta que não fuja à linguagem e condição humanas. O humano, que marcado pela liberdade, tem na contingência de suas construções um limite para as suas conquistas e um espaço para a sua libertação de qualquer processo desumanizador.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Objetiva esta pesquisa descrever e analisar as representações religiosas dos pentecostais do Assentamento Herbert de Souza, localizado no município de Moreno, no Estado de Pernambuco. Percebemos no decorrer da investigação que os assentados pentecostais, todos beneficiados pela ação do Movimento dos Trabalhadores Rurais Sem Terra (MST), atualizam suas representações religiosas de acordo com a demanda de vida que os motivou quando da entrada deles nas terras que pertenceram ao Engenho Pinto. Foi constatado também que o lugar e o tempo no qual aconteceu a inserção de cada pentecostal fez com que eles desenvolvessem elaborações religiosas diferenciadas acerca do Movimento, da terra e do que concebem como prática religiosa. Assim eles tecem redes simbólicas de significado que dão ordem às suas concepções de mundo. Procuramos comparar as representações dos pentecostais que já residiam nas terras do Engenho antes da ocupação com as daqueles que vieram depois, já como militantes do MST, ou simplesmente beneficiados pelo processo de democratização da terra. Criamos três tipos idéias de pentecostais: os pré-ocupação, os pós-ocupação e os pró-ocupação. Consideramos, finalmente, que as representações são elaboradas num momento de crise, em que há um intercâmbio de saberes entre o que afirma o MST e o que sistematiza as doutrinas da igreja à qual os fieis estejam vinculados. A situação de contingência é fundamental para o surgimento de um processo de negociação entre as práticas doutrinárias pentecostais e as exigências do MST.(AU)

Relevância:

10.00% 10.00%

Publicador:

Resumo:

This dissertation addresses the work of the memoirs of the potiguar writer Luís da Câmara Cascudo (1898 - 1986) from an integrated reading of four works that comprise: O Tempo e Eu (1968), Pequeno Manual do Doente Aprendiz (1969), Na Ronda do Tempo (1971) and Ontem (1972). Produced under the contingency of the modern movement and urban reform, memories Cascudo evoke the old landscapes of old, populated by those who belonged to the old romantic and provincial Natal that no longer exists, but which still survives in the idealized memory author and that is (re)constructed by him from a written permeated with touches of imagination and a sense of nostalgia. Seeking to analyze how is the process of building memoirist of Cascudo, as well as reflect on the role that memory plays in the (re)construction of a time and a lost space, we used the studies of Maurice Halbwachs (2006) and Ecléa Bosi (1994). Within this theoretical framework, we seek, above all, to understand not only how the lived experiences of Cascudo will work in this matter of his memory, but also as this will guide a writing that touches on the history and social frameworks of the past

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Adolescence is seen as a phase of life marked by a series of physical and behavioral changes, which leads to certain risk situations, such as early sexual activity, pregnancy and the occurrence of sexually transmitted diseases. Based on this statement, this research aimed generally: meet the sexual and reproductive adolescents of a reference service in Natal profile. Specifically describe the socioeconomic, sexual and reproductive individual and family characteristics of the population in question, but also verify possible association between pregnancy and age of onset of sexual activity with the socioeconomic aspects. The sectional study conducted in the database from the records of 463 adolescents seeking care in a referral center in Sexual and Reproductive Health in the period March 2011 to June 2012. The data collected were subjected to analysis by Excel 2007 and Statistical Package for Social Sciences (SPSS) 17.0. For data analysis, descriptive statistics, with absolute numbers and percentages was used, and its presentation by means of distribution and frequency tables. Results showed that the parents of these adolescents (65.7% - father; 57.8% - mother), had primary education; family income less than two minimum wages (66.2%); any type of chemical dependency in the family (33.5%) and presence of domestic violence (20.6%). A higher probability of pregnancy was verified when the mother had only primary education (26.3%), persons other than the father or mother contributed to family income (33.3%) and (26%) when there was substance abuse in the family early onset of sexual activity was observed when the mother had primary education (57.3%), persons other than the father or mother contributed to family income (63.1%) and the use of drugs / alcohol as a problem family (67.6%). It was concluded that such vulnerabilities appear as a reflection of the low social status of these young people, aggravated by emotional inheritance that is offered to every individual from birth. These findings may perhaps, support public health surveillance policies for adolescents in several areas

Relevância:

10.00% 10.00%

Publicador:

Resumo:

This work presents a proposal to build a Mathematics Teaching Laboratory (MTL) whose main theme is the study, construction and use of instruments for navigation and location of mathematical content in an interdisciplinary way approach, and develop a notebook of activities focused on navigational instruments. For this it was necessary a literature review to understand the different conceptions of MTL and its pedagogical implications. The methodology used was literature research, construction and handling of instruments, and pedagogical experimentation. Lorenzato (2006) highlights the importance of an environment and suitable for a professional who can do a good job instruments. The implementation of an LEM can find some obstacles. The lack of support from other teachers or the management, the lack of a suitable place to store the materials produced, the lack of time in the workload of the teacher to prepare the lab activity, etc. Even in unfavorable or adverse conditions, according Lorenzato (2006), its implementation will benefit teachers and students. The lack of teacher training in their initial and continuing education, to use materials, and the lack of manuals with lab activities are also mentioned as factors that keep teachers from MTL. With propóposito assist the teacher of elementary or middle school in building a theme MTL prepared and we are providing a notebook of activities that provides a didactic sequence involving History and Mathematics. The book consists of four accompanied by suggestions for teachers activities, however the teacher has full autonomy to adapt the activities to the reality of your school. Among the instruments of navigation presented in this study chose to build the quadrant due to its simplicity, low cost of material and great teaching potential that this instrument has. But a theme lab is always being built and rebuilt as it is a research environment

Relevância:

10.00% 10.00%

Publicador:

Resumo:

This study will present the results of an investigation of how the history of mathematics and theater can contribute to the construction of mathematical knowledge of students in the 9th year of elementary school, through the experience, preparation and execution of a play, beyond presentation of the script. This brings a historical approach, defining space and time of events, putting the reader and viewer to do the route in the biography of Thales of Miletus (624-546 a.C), creating situations that led to the study and discussion of the content related to the episode possible to measure the height of the pyramid Khufu and the Theorem of Thales. That said, the pedagogical proposal implemented in this work was based on theoretical and methodological assumptions of the History of Mathematics and Theatre, drawing upon authors such as Mendes (2006), Miguel (1993), Gutierre (2010), Desgrandes (2011), Cabral (2012). Regarding the methodological procedures used qualitative research because it responds to particular issues, analyzing and interpreting the data generated in the research field. As methodological tools we have used participant observation, the questionnaire given to the students, field diary and dissertativos texts produced by students. The processing and analysis of data collected through the questionnaires were organized, classified and quantified in tables and graphs for easy viewing, interpretation, understanding and analysis of data. Data analysis corroborated our hypothesis and contributed to improving the use and display of the play as a motivating activity in mathematics classrooms. Thus, we consider that the script developed, ie the educational product proposed will bring significant contributions to the teaching of Mathematics in Primary Education

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The Acquisition Food Program (Programa de Aquisição de Alimentos – PAA) is one of the governmental public politics proposed, in the year of 2003, that has the focus in the family-run farm in Brazil. This Program has as objectives: commercialize the familyrun farm products, bought by the government agencies; to encourage production, and promoting actions that improve quality food of people facing starving risk. This Program has been working, to some extent, as complement to the Program of family-run farm Enhancement (PRONAF). The present study has as its focus to analyse the social territorials changes observed in the state of Rio Grande do Norte, as a result of the PAA implementation. In this sense, it was promoted a discussion between territory and rules. I this work, public politics are understood as rules. This procedure was important in order to understand how the rules have influenced territorial changes, creating new social and territorial relations. In the research process was used scientific and institutional texts on the subject. It was applied a quiz with 97 PAA’s supplying farmers, and interviews were done with the Program managers in Federal (MDA), State (CONAB and EMATER) and municipal (local office of EMATER and Departments of Agriculture) levels. Social public politics were also analyzed with the aim of understand the context where PAA is situated in relation with the public politics directed to familyrun farm as a whole since 1980, within new Brazilian democratization process. With the information collected in the field, plus the secondary data, maps, charts, tables and cartograms were made. With all of this, a socio-economical profile of the family-run farm in the Rio Grande do Norte was traced, as well as the included in this research. Before this picture, we concluded that PAA indeed represents a forward in public politics directed to family-run farm. However, in spite of the importance of the Program for the family-run farmers to come of age, but in order to the rural and family-run farm reality in the Rio Grande do Norte come to present meaningful changes much still remain to be done.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The demand side growth accounting studies the demand aggregate component contributions in the Gross Domestic Product (GDP). Traditionally, international and national organizations that uses the traditional method for calculating such contributions. However, this method does not take into account the effect the induction of imports by the various components of aggregate demand on the calculation of these. As an alternative to this method are presented others studies that consider this effect, as the alternative method proposed by Lara (2013), the attribution method, proposed by Kranendonk and Verbruggen (2005) and Hoekstra and van der Helm (2010), and the method the sraffian supermultiplier, by Freitas and Dweck (2013). Was made a summary of these methods, demonstrating the similarities and differences between them. Also, in the aim to contribute to the study of the subject was developed the “method of distribution of imports” that aims to distribute imports for the various components of aggregate demand, through the information set forth in the input-output matrices and tables of resources and uses. Were accounted the contributions to the growth of macroeconomic aggregates for Brazil from 2001 to 2009 using the method of distribution, and realized comparison with the traditional method, understanding the reasons for the differences in contributions. Later was done comparisons with all the methods presented in this work, between the calculated contributions to the growth of the components of aggregate demand and the domestic and external sectors. Was verified that the methods that exist in the literature was not enough to deal with this question, and given the alternatives for contributions to the growth presented throughout this work, it is believed that the method of distribution provides the best estimates for the account of contributions by aggregate demand sector. In particular, the main advantage of this method to the others is the breakdown of the contribution of imports, separated by aggregate demand component, which allows the analysis of contribution of each component to GDP growth. Thus, this type of analysis helps to study the pattern of growth of the Brazilian economy, not just the theoretical point of view, but also empirical and basis for the decision to economic policies

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The study aimed to analyze the nursing diagnoses of the nutrition domain from NANDA International in patients undergoing hemodialysis. This is a transversal study conducted in a university hospital in northeastern Brazil, with 50 hemodialysis patients. The data collection instrument was an interview form and a physical examination, in digital format, applied between the months of December 2013 to May 2014. Data analysis was divided into two stages. In the first, defining characteristics, related factors and risk factors were judged as to their presence by the researcher, according to the data collected. In the second stage, based on data from the first, diagnostic inference by experts was held. The results were organized in tables and analyzed using descriptive and inferential statistics for the diagnoses that showed higher frequencies than 50%. The project was approved by the Ethics Committee responsible for the research institution (protocol number 392 535), with Certificate Presentation to Ethics Assessment 18710613.4.00005537 number. The results indicate a median of 7 (± 1.51) nursing diagnoses of the nutrition domain per patient. Six diagnoses with greater frequency than 50% were identified, namely: Risk for electrolyte imbalance, Risk for unstable blood glucose level, Excess fluid volume, Readiness for enhanced fluid balance, Readiness for enhanced nutrition and Risk for deficient fluid volume. The defining characteristics, related and risk factors presented an average of 34.78 (± 6.86), 15.50 (± 3.40) and a median of 4 (± 1.93), respectively, and 11 of these components had statistically significant association with the respective diagnoses. Were identified associations between adventitious breath sounds, edema and pulmonary congestion with the diagnosis Excess fluid volume; Expressed desire to increase fluid balance with the nursing diagnosis Readiness for enhanced fluid balance; It feeds regularly, Attitude to food consistent with the health goals, Consume adequate food, expresses knowledge about healthy food choices, expresses desire to improve nutrition, expresses knowledge about liquid healthier choices and following appropriate standard supply with diagnosis Readiness for enhanced nutrition. It is concluded that the diagnosis of the nutrition domain related to electrolyte problems are prevalent in customer submitted to hemodialysis. The identification of these diagnoses contributes to the development of a plan of care targeted to the needs of these clients, providing better quality of life and advance in the practice of care

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The city of Natal has a significant daylight availability, although it use isn’t systematically explored in schools architecture. In this context, this research aims to determine procedures for the analysis of the daylight performance in school design in Natal-RN. The method of analysis is divided in Visible Sky Factor (VSF), simulating and analyzing the results. The annual variation of the daylight behavior requires the adoption of dynamic simulation as data procedure. The classrooms were modelled in SketchUp, simulated in Daysim program and the results were assessed by means of spreadsheets in Microsoft Excel. The classrooms dimensions are 7.20mx 7.20m, with windows-to-wall-ratio (WWR) of 20%, 40% and 50%, and with different shading devices, such as standard horizontal overhang, sloped overhang, standard horizontal overhang with side view protection, standard horizontal overhang with a dropped edge, standard horizontal overhang with three horizontal louvers, double standard horizontal overhang, double standard horizontal overhang with three horizontal louvers, plus the use of shelf light in half the models with WWR of 40% and 50%. The data was organized in spreadsheets, with two intervals of UDI: between 300lux and 2000 lux and between 300lux and 3000lux. The simulation was performed with the weather file of 2009 to the city of NatalRN. The graphical outputs are illuminance curves, isolines of UDI among 300lux and 2000 lux and tables with index of occurrences of glare and to an UDI among 300lux 3000lux. The best UDI300-2000lux performance was evidenced to: Phase 1 (models with WWR of 20%), Phase 2 (models with WWR of 40% and 50% with light shelf). The best UDI300-3000lux performance was evidenced to: Phase 1 (models with WWR of 20% and 40% with light shelf) and Phase 2 (models with WWR of 40% and 50% with light shelf). The outputs prove that the daylight quality mainly depends on the shading system efficacy to avoid the glare occurrence, which determines the daylight discomfort. The bioclimatic recommendations of big openings with partial shading (with an opening with direct sunlight) resulted in illuminances level higher than the acceptable upper threshold. The improvement of the shading system percentage (from 73% to 91%) in medium-size of openings (WWR 40% and 50%) reduced or eliminate the glare occurrence without compromising the daylight zone depth (7.20m). The passive zone was determined for classrooms with satisfactory daylight performance, it was calculated the daylight zone depth rule-of-thumb with the ratio between daylight zone depth and the height of the window for different size of openings. The ratio ranged from 1.54 to 2.57 for WWR of 20%, 40% and 50% respectively. There was a reduction or elimination of glare in the passive area with light shelf, or with awning window shading.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Spinal cord injury causes permanent disabling manifestations, affecting the anatomic integrity, bodily changes and functional limitations related to the disability state. It was aimed to analyze the social representation, stress level and experiences of fishermen victims of spinal cord injury caused by diving accident in the Northern beaches of Brazil. It is a descriptive - exploratory study with quantitative, qualitative and representational data developed i n fishermen’s villages in nine beaches of Northern shore/RN, between October 2013 to August 2014, after the approval of the Ethics Committee in Research of the Universidade Federal do Rio Grande do Norte, under the number 431.891/2013, CAAE 20818913.0.0000 .5537. The sample was composed by 44 fishermen with spinal cord injury, defined from inclusion and exclusion criteria of the participants. It was used as instrument to collect the data a semi structured interview. Quantitative data was analyzed by descrip tive statistics, showing the data through table, boxes and graphics by Microsoft Excel. Data from interviews were submitted to the software called Analyse Lexicale par Contexte d’un Ensemble de Segments de Texte (ALCESTE) using the analysis of the Social R epresentation Theory and Center Core Theory. It is shown the outcomes of the research through four articles, following the normative recommendations of the journals. Participants of the study were all male, age mean 49,6 years, elementary school (68,2%), m arried (77,3%); paraplegia sequel (50,0%). Most of them showed stress (75,0%), almost in the exhaustion stage (33,3%), prevalent insomnia symptoms (95,5%) in the last hours; hypertension (97,7%) in the last week and sexual troubles (95,5%) in the last mont h). Decompressive illness caused spinal cord injury (57,1%), occurred prevalently in low summer (75,0%), northern shore (96,4%), having as main consequences the paresthesia and pain in the upper and lower limbs (67,9%), followed by death (25,0%). Interview analysis under the understanding of Social Representation of spinal cord injury allowed the appearance of seven categories: Treatment: limitation and expectative; Spinal Cord injury: before and after; Retirement: reality yet to come; Disability: dependenc y, incapacity, vulnerability; Overcoming and autonomy; Self feelings: physics losses and new start; Life and labor: impediments, plans and changes. The center core of the representation is found in the first category by the expectative and limitation on th e treatment, meanwhile the outskirt elements are in seventh and third categories. Physics limitation for fishing activities and retirement expectative is the most outstanding of the structure. Social representation concerning spinal cord injury is found in a transaction moment between before and after with the prevented fishing activity, coping of the situation with the potential remaining. The anchoring is established in the desire for changes related to the improvements of life and health conditions exper ienced day by day through faith. This study finishes pointing out the range of the objectives, which topic is relevant for public health of fishermen. It is suggested prevention measures, promotion and health recovery of fishermen, besides safe, healthy an d worthy conditions as a compromise of social and health politics.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The present study aims to analyze the spatial organization of the Ribeira district in Natal/ RN from the two circuits of the urban economy. For its realization, was used the bibliographical, documentary and field research. From the information collected in the field research and of secondary data was elaborated the maps, tables, graphics, frames and photographic collections. In the analysis of the results identified the presence of two circuits of the urban economy in the said neighborhood, thus as the predominance of the upper circuit compared to the lower circuit between the surveyed establishments, well as the role that each of the circuits represents to their spatial organization. Some variables such as technology, organization, information, publicity and consumption were important to establish the main differences between the circuits.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The research aimed to construct and validate a data collection instrument of pregnant couple as part of primary care. It was considered hypothesis that level of agreement from 70% among participants to validate the expert panel. The document has been based on the Theory of Human Needs by Horta and adjusted by Garcia and Cubas. It is a study of methodological type developed in four stages: identification of empirical indicators to pregnant women through an integrative literature review; evaluation of empirical indicators and their relation to human needs by focus group; structuring of the second version of instrument by categorization of indicators and appearance and content validation of the third version of instrument by judges, by use of Delphi technique. The collection of data was the first stage in months from August to October 2014 in the Journal of Midwifery and Women's Health and Scopus, PubMed, Lilacs, CINAHL, Cochrane databases. The remaining steps were carried out from November 2014 to February 2015. For the focus group was counted with participation of six experts through two meetings. As for the judges, it was obtained a population of 63 and final sample of 51 judges divided into 46 basic health units of Municipal City Health Natal/RN, Brazil. The study was approved by the Research Ethics Committee of Universidade Federal do Rio Grande do Norte, under Protocol number 876.200. For data analysis of the first stage it was used descriptive statistics and results are presented in tables and charts. At that stage were identified 162 empirical indicators and, when they were related to human needs, 64 by them were on psycobiological, 97 on psychosocial and one (1) on psychospiritual needs. Regarding the second and third stages, data were treated by process of categorizing and analyzing the Content Validity Index. The indicators obtained a 100% validation index. In appearance and content validation phase of instrument non-validated items were excluded and other items obtained index above 70%. Furthermore, it obtained 99% content validity index in the second version and 95.7% in the third version of the instrument as a whole and, therefore, validated tool. This instrument contains Health Institution, pregnant woman and her partner identification data, information on the human needs of the pregnant and items pertaining to systematize the collection of pregnant couple data during prenatal care. By the conclusion of the study, nurse shall have an instrument to collect the data of pregnant couple in primary care innovative by considering psychobiological, psychosocial and psychospiritual pregnant needs and insert health and sociodemographic data of pregnant partner in the context of pregnancy. Also, the document will serve as a tool for teaching and research in obstetrical nursing.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The study of solutions is considered very important to chemist’s education because most of the chemical reactions occur in aqueous medium, being also required to understand other subject such as chemical changes, electrochemical and chemical balance. Nevertheless, it is noticed that many students indicate learning difficulties related to the content of solutions, how to pass among the macro-submicroscopic knowledge levels, and how to solve quantitative problems that demanding the establishment of a stoichiometric ratios. This thesis defended considers the use of contextualized teaching strategies about some subject associated to the study of solution, can foster student learning through reflection and understanding of their own difficulties, besides to provide motivation and active participation. The target group is formed by students of the undergraduate distance education with major in chemistry education of the Universidade Federal do Rio Grande do Norte (UFRN), and they were chosen because this education system is expanding and its learning difficulties publications number is reduced as well. Thus, the first methodological stage was to identify the student’s main learning difficulties associated to the study of solutions through literature sources. Next, using an adapted script of the Plano Nacional do Livro Didático para o Ensino Médio (PNLEM, Textbook National Plan for High School), the approach of the content of solutions printed in educational materials used by the target group was analyzed. Afterward, a teaching unit was planned in the last methodological stage and, finally, a new teaching unite was given with a sequence of contextualized activities such as video presentation, dialogued lecture, questionnaires application, exercises, and an experiment, where the target group’s main difficulties related to learning of solution were identified. The participants of the teaching unit activities had some learning difficulties in understand concepts of compound, ion, charge, entropy and solubility, as well as to identify the ion charge, interpret statements, decode tables, use the chemical language, perform mathematical calculations and use concentration units, similar results raised in the literature sources. In order to work on these difficulties, these students were encouraged to expose, question and test their ideas about the phenomenon under study, allowing learn from their mistakes and reflect on the organization strategy of scientific explanatory models they use. Therefore, activities and information about learning difficulties presented in this thesis need to be critical reflection object, because it can help both students in the process of acquiring knowledge about the content of solutions and professors in the planning of their lessons.