Luiz Clement

Motivação autônoma de estudantes de física: evidências de validade de uma escala

Based on the Theory of Self-Determination we prepared an instrument to evaluate the motivation of high school students when developing activities of the Physics. We sought to evidence the scale validity, by asking an initial question: Why do I do the activities in the physics classes?.” It was presented a set of 55 affirmatives, in a Likert scale with five-point. This scale was applied to a sample of 708 high school students. Were conducted the following statistical tests: factor analysis, with principal components extraction; analysis of internal consistency, descriptive statistics and the Pearson correlation. We found six representative factors: demotivation α=0.89; External Regulation – RP (Rules or Punishment) α=0.73; External Regulation – RS (Social Rewards) α=0.76; Introjected Regulation α=0.68; Identified Regulation α=0.91 and Intrinsic Motivation α=0.93, explaining 51.74% of data variability. The results indicate that we may trust the scale and we can use it in future research projects..

MODELIZAÇÃO: UMA POSSIBILIDADE DIDÁTICA NO ENSINO DE BIOLOGIA

Modelization has a significant role in the teaching of science in general. However, there are few studies related to this topic. In this paper we will identify the role given to modelization in science teaching, particularly in biology teaching. To that end, we present an analysis of one activity, developed in a second grade class of high school, with the purpose to work the human body theme through the construction of representational models. With such activity we wish to overcome the traditional presentation of the human body in textbooks, providing students with a comprehensive understanding about what it is and how it is structured. Finally, we believe that modelization is an effective possibility for the teaching-learning process in biology.

Autonomous motivation of physics students: evidence of validity of a scale

Based on the Theory of Self-Determination we prepared an instrument to evaluate the motivation of high school students when developing activities of the Physics. We sought to evidence the scale validity, by asking an initial question: Why do I do the activities in the physics classes?.” It was presented a set of 55 affirmatives, in a Likert scale with five-point. This scale was applied to a sample of 708 high school students. Were conducted the following statistical tests: factor analysis, with principal components extraction; analysis of internal consistency, descriptive statistics and the Pearson correlation. We found six representative factors: demotivation α=0.89; External Regulation – RP (Rules or Punishment) α=0.73; External Regulation – RS (Social Rewards) α=0.76; Introjected Regulation α=0.68; Identified Regulation α=0.91 and Intrinsic Motivation α=0.93, explaining 51.74% of data variability. The results indicate that we may trust the scale and we can use it in future research projects..

Motivación autónoma de estudiantes de física: evidencias de validez de una escala

Based on the Theory of Self-Determination we prepared an instrument to evaluate the motivation of high school students when developing activities of the Physics. We sought to evidence the scale validity, by asking an initial question: Why do I do the activities in the physics classes?.” It was presented a set of 55 affirmatives, in a Likert scale with five-point. This scale was applied to a sample of 708 high school students. Were conducted the following statistical tests: factor analysis, with principal components extraction; analysis of internal consistency, descriptive statistics and the Pearson correlation. We found six representative factors: demotivation α=0.89; External Regulation – RP (Rules or Punishment) α=0.73; External Regulation – RS (Social Rewards) α=0.76; Introjected Regulation α=0.68; Identified Regulation α=0.91 and Intrinsic Motivation α=0.93, explaining 51.74% of data variability. The results indicate that we may trust the scale and we can use it in future research projects..