Banca de DEFESA: LUAN COSTA DE LUNA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : LUAN COSTA DE LUNA
DATE: 13/12/2023
TIME: 09:00
LOCAL: https://meet.google.com/aiu-uigb-wng
TITLE:

Teaching and learning the Sampling in Secondary School

KEY WORDS:

Statistical Education. Sampling. Secondary School. Teaching.

PAGES: 200
BIG AREA: Outra
AREA: Multidisciplinar
SUMMARY:

In a society where a large amount of information circulates daily, it is necessary for students to develop skills related to research, such as defining the population to be investigated (census or sample), in order to make well-founded judgments and make appropriate decisions. In this context, in Secondary school, the BNCC presents explicit skills in concepts related to sampling from the 7th to the 9th grade. However, there is no effective gradation between them. Thus, this research aimed to propose a gradation of learning concepts related to sampling in the Secondary School (6th to 9th grade). To this end, three interrelated studies were developed. The first analyzed all 88 textbooks approved in the 2017 and 2020 editions of the PNLD, seeking to analyze what has been proposed for students. In the second study, a survey was carried out with 307 students in the final years of Elementary School, seeking to find out what the students knew about sampling. And finally, the third experimental study, in which an intervention process was developed with 6th and 9th grades, totaling 350 students. The results of Study 1 revealed that the activity proposals meet the demands set out in the curricular guidelines in such a way that the PNLD 2020 has greater emphasis on concepts linked to sampling. In this analysis, we observed aspects that require attention due to the excess of (i) fictitious data, (ii) population/sample in the context of people and (iii) situations of simply identifying the sampling technique used in the research. Furthermore, we noted the absence of activities that addressed variable and sample variability, the concept of margin of error and relationship with sample size. On the other hand, we noticed positive aspects such as U-shaped guidance on activities for teachers and statistical research proposals. In Study 2 we noticed a progression in student performance in relation to schooling. We found that there was a significant statistical difference in student performance only between the 6th and 9th grade. These results allowed us to develop and carry out the intervention. We carried out an experimental study with pre-test, teaching intervention and post-test. Statistical analyzes indicate, as expected, that the classes that underwent the intervention performed better than those that did not participate. However, we emphasize that the performance of the 6th grade intervention classes in the post-test was statistically significantly higher than the 9th grade classes in the pre-test, thus suggesting the possibility of learning since that school year. We realized that the intervention process was effective, since students were able to rethink some beliefs and attitudes regarding sample research, in particular, the margin of error and simple random sampling. Furthermore, they adequately perceived and justified biases in sample selection, as well as adequately establishing the relationship between population and sample. This is due to a range of knowledge elements of Statistical Literacy that the activities allowed to mobilize in actions that encouraged dialogue, exchange and systematization on the part of students. Next, we were able to develop the gradation for learning concepts related to sampling, which was based on the results of the three studies in the thesis. Distributed in the secondary school, the gradation presents skills from the simplest to the most sophisticated in terms of understanding for students. We believe that it can allow for a systematic and progressive teaching of concepts, enabling the construction of teaching strategies that will benefit basic education teachers, as well as students, developers of curricular proposals, authors of textbooks, training processes, among others.

COMMITTEE MEMBERS:
Presidente - 1121255 - GILDA LISBOA GUIMARAES
Interna - 1196238 - JAQUELINE APARECIDA FORATTO LIXANDRAO SANTOS
Externo à Instituição - LISBETH KAISERLIAN CORDANI - USP
Externa à Instituição - MARIA MANUEL DA SILVA NASCIMENTO
Externa à Instituição - MAUREN PORCIÚNCULA MOREIRA DA SILVA - UFRGS