Construction of mathematical knowledge using the cryptography theme for High School

• Autor(a) principal: Kranz, Bárbara Elisa
• Data de Publicação: 2021
• Outros Autores: Olgin, Clarissa de Assis
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista de Ensino de Ciências e Matemática - REnCiMa
• Texto Completo: https://revistapos.cruzeirodosul.edu.br/rencima/article/view/2877
• topic: Currículo de Matemática; Ensino Médio; Matrizes; Criptografia; Planilhas Eletrônicas; Mathematics Curriculum; High School; Matrices; Cryptography; Electronic Spreadsheets; Currículo de Matemáticas; Escuela Secundaria; Matrices; Criptografía; Hojas de Cálculo

With the intense use of digital technologies by society, the privacy and security of information transmitted between individuals by the internet is becoming increasingly necessary. In this scenario that encryption becomes essential, as it allows data to be securely shared by these means. Thus, it is understood that this topic has the potential to be explored in the classroom, especially in the teaching of mathematics. The purpose of this article is to present the contributions of a didactic sequence using Excel spreadsheets involving the theme cryptography and the matrices, a high school content. It is a mathematical investigation, developed with six students from the 3rd year of high school, from a public school, in the state of Rio Grande do Sul (Brazil). The data were obtained through the application of questionnaires, written records and files saved in electronic spreadsheets, which made it possible to analyze the didactic proposal. Based on these records, it appears that it is possible to work on the content of matrices in a contextualized way and combined with the use of electronic spreadsheets. Through this study, it is concluded that the elaboration of contextualized activities can contribute to the development of the content of matrices and the use of electronic spreadsheets, as a technological resource, can be a facilitator for the teaching and learning process of students from high school.