App inventor 2: estudo propositivo para o ensino de análise combinatória

Abstract

This work presents a didactic sequence proposal for teaching Combinatorial Analysis for High School, using the App Inventor 2 platform. Thereforewas it was necessary to previously perform a bibliographic search, to understand the teoric base that involves Construcionist Theory, to understand the concept of Computational Thinking and its ways of inclusion in the classroom, the App Inventor 2 platform was approached, trying to understand its functionalities as a teaching tool. The proposed didactic sequence presented contains five activities and is intended to arouse the student's interest, enabling a better learning of the Combinatorial Analysis learning object, addressing: Fundamental Principle of Counting, Arrangement, Combination and Simple Permutation. The first four activities are structured so that the student, through a proposed problem, understands the situation presented and can generalize this situation to build an application that helps to solve the initial problem. And the fifth activity proposes the development of a combinatorial calculator. The sequence of activities was structured so that students start with the simplest content and gradually evolve in each activity, in this way the first application will help in the construction of the second one and so on. The pillars of the Computational Thinking (abstraction, pattern recognition, decomposition and algorithms) are identified in each stage developed, being possible to visualize the four pillars during the development of activities. The proposal involving the use of App Inventor 2 seeks to explore several mathematical aspects, seeking to stimulate the learning of Combinatorial Analysis and the understanding of situations involving this object of knowledge, presenting a different way of approaching it in the classroom, in a less traditional way, making the student the main actor in their learning.