Abstract

Among many contemporary challenges faced by our society is the moral and ethical education of new generations. Young students bring to school a variety of cultural (including religious) backgrounds and worldviews, not rarely of very heterogeneous and conflicting nature. In spite of the secular nature of Brazilian public education system, Federal Constitution of 1988 and the Law of Directives and Bases of National Education (issued in 1996) allow religious education to be offered in public schools. Therefore, religious education is nowadays offered in many schools, spreaded around a country marked by extensive social, economical, ethnical and cultural diversity. A number of researches point to emerging issues of religious nature that are now present in classrooms of many school disciplines -among them, Biology. Article number 205 of Brazilian Federal Constitution reads that education is a right that assists to all, no matter which race, social class or religious affiliation, so that citizens' full development is a primordial objective of education, followed by preparation for the practice of citizenship and work qualification. Schools must be formal spaces for teaching, according to strong and universal ethical principles such as: equality, freedom for learning, pluralism of ideas, and investigating and disseminating art and knowledge, among others. It is a State duty, therefore, to promote and stimulate education with the collaboration of society. As Federal Constitution also reads that each family has this responsibility with children too, it is a matter of concern that, in last years, social and economical factors are forcing families to transfer these duties to schools and teachers. In schools, a number of Biology contents may bring up students' beliefs and worldviews impregnated of common sense, and also feelings of religiosity. These emergent elements may have a significant value for enriching pedagogical interactions, either with discussions about social and cultural plurality, or with challenging or even disrupting educational situations, in which conflicts and oppositions will be brought up as a result of diversity of opinions and views. It is our position that these are two possible ways that can be followed by a teacher, depending on his/her methodological direction and ethical position. We also understand that each teacher, especially Biology teachers working in secondary education, should welcome these discussions in classroom, organizing opportunities for ethical debates, including issues of religious nature, this way presenting scientific concepts of biological phenomena, but also respecting students' cultural and religious values. In official documents that guide the Biology teaching in basic Brazilian education -the directives, the directions and the national parameters -contents such as Ecology and Evolution play a central role due to their integrational power. However, Biology teachers often face a number of difficulties when trying to follow these directives. Problems in their own education, the reductionist and highly content-based nature of Biology education, as well as severe material restrictions for teachers' work in schools are some of the difficulties that may account for this situation. In spite of these difficulties, issues such as abortion, euthanasia, drugs, sexuality, Biological Evolution (BE) and origin of living beings always bring, in classroom, controversial questions that must be part of every teacher's pedagogical practice. Teaching BE has always raised a number of polemical issues, followed by deep conceptual and ethical implications. Therefore, any contribution aimed at helping its approach as a necessary content in Biology teaching is welcomed. This paper aims at showing some of the conditions, attitudes and arguments that may be useful for the teaching of BE. Among them, we point to nonoverlapping magisteria (NOMA) principle, an ethical and methodological principle proposed in 1997 by palaeontologist Stephen Jay Gould. We understand that Gould's principle offers conditions and opportunities to develop what Brazilian educator Paulo Freire calls a dialogical, libertarian and dialectic education, and this paper will follow his educational perspective. Basically, NOMA principle states that both religion and science have their own separate domain. These separate domains should be respected, avoiding their overlapping in issues concerned with each of them separately. However, there are themes, as mentioned above, in which it is possible to identify elements for each of those domains. Biology teachers must then have a very clear view of the differences between explanations offered by each of these domains, when working with their students about contentious issues such as BE. Freire, when describing the necessary elements for educational practice, points that the act of teaching demands both ethics and corporification of words through practice. Opposing his view to simple Puritanism principles, he states that educational practices should be rigorous evidences of decency and purity. Freire also states that, as an act of respect towards any human being, school contents shouldn't be taught without respect to students' moral education. Therefore, according to Freire, to think "right" means to act "right". For Freire, a teacher that is genuinely concerned with moral and ethical development of his/her students will act accordingly in classroom, bringing into discussion issues that benefit both from science knowledge and also from students' non-scientific worldviews. We propose that Gould's NOMA principle can be developed by teachers as a fruitful strategy for teaching Biology contents as BE. Learning from some examples taken from school contents, we aim to show that the application of such principle in school would help clarifying the nature and foundations of evolutionary theories, mainly neo-Darwinism, as well as the non-overlapping domains of scientific and religious worlds. Therefore, it would be possible to maintain the necessary distance (demanded for ethical reasons) from subjective issues, without any harm for the necessary, objective and deep appreciation of scientific knowledge. In this perspective, we understand that well-known incompatibilities between science and religion could be clarified and discussed with students, since each of these domains have an important role in pupils' personal development