deletions | additions       diff --git a/In_it_students_can_interact__.tex b/In_it_students_can_interact__.tex  index bbb5c82..03d625a 100644  --- a/In_it_students_can_interact__.tex  +++ b/In_it_students_can_interact__.tex 
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In it, students can interact visually and using gestures with the graphs of functions of a real variable. A character (DOT) is the way that represents the interaction with Kinect through the fist of the student. The gesture that occurs with the fist will result in a graphic representation of motion in a straight line it has been simulated with the fist. The student will identify different characteristics of movement performed by the graphics functions and their derivatives in a coordinate system. With the challenge that the game presents, it is expected that the student arrives to swiftly identify different behaviors of graphs. Features of growth or decrease and concave up or down will be associated with increasingly fast or slow movements, left or right.  Beyond entertainment, games can provide the acquisition of various concepts and skills through experience acquired during it’s usage. According to \citet{koster2013theory}, games can generate motor skills, spatial skills, shape identification, and curiosity to the player. According to \citet{sawyer2008cells} games and game technologies offer a broad scope of possible assistance to health and health care. The use of games during a treatment can generate health benefits to the patient from the dynamism and youthfulness provided by them. The communication between hardware and software interfaces has fostered the development of games for health. According to \citet{teixeira2012user}, the The  use of information systems for health, although able to provide solutions and assist in the recovery of the health of patients, should be designed carefully so as not to bring negative effects. \cite{teixeira2012user}  Studies indicate a wide acceptance of the use of games along with motion detection equipment, as they make treatment more engaging and entertaining, as well as several improvements and developments in rehabilitation treatment. In \citet{menezes2014development}'s study, they developed a game system composed of three modules. A module for the physiotherapist to archive adaptability and progress monitoring, a server module to archive portability that communicates with the physiotherapist module and the patient module that is composed of two games to meet the needs of different genres and the game interface specification. The game is named Asteroids kRehab. It was developed with the XNA game engine and Kinect for Windows SDK. The game has a 2D interface and has the objective is to exercise specific movements. The game Asteroids kRehab expects the patient to perform specific movements that were previously defined by the physiotherapist (Repetition of Specific Movements - R.S.M.). The dynamics of the game is to control the spaceship with the configured therapy: movement, time, maximal and minimal angles. The patient will have to make the spaceship go to the upper or lower corner of the screen when he reaches the maximum and minimum angles. The goal is to make the spaceship (player) dodge the asteroids that are coming. The anatomical landmarks of the human body that have been detected represents the following Kinect joints: the glenohumeral joint is represented by the ShoulderLeft/ShoulderRight Kinect joint points and the radiohumeral articulation is represented by the ElbowLeft/ElbowRight Kinect joint points.