CONHECIMENTO PARA O ENSINO DE CIÊNCIAS E MATEMÁTICA: UMA PESQUISA COM PROFESSORES EM FORMAÇÃO CONTINUADA

KNOWLEDGE FOR TEACHING SCIENCES AND MATHEMATICS: A RESEARCH WITH TEACHERS IN CONTINUING TRAINING RESUMO Neste artigo, são relatados resultados de uma pesquisa com professores de Biologia, Química e Matemática, em formação continuada, aos quais foi aplicado um instrumento para avaliar o conhecimento pedagógico do conteúdo, denominado CoRe (Content Representations - Representações de conteúdo). Para isso, inicialmente foi realizada uma revisão de estudos sobre as características do conhecimento do professor e, posteriormente, foi aplicado o instrumento a 15 participantes, que responderam questões sobre o ensino de conteúdos de suas respectivas áreas. Suas respostas foram analisadas e constatou-se que a maior parte deles tem conhecimentos para o ensino dos conteúdos abordados no instrumento. Concluiu-se que o CoRe precisa ser aplicado juntamente com outros instrumentos de pesquisa, tais como entrevistas, relatórios e observações de sala de aula, para que seja possível confirmar as respostas dadas pelos professores. PALAVRAS-CHAVE: Conhecimento; ensino; professores; formação continuada. ABSTRACT In this article, we relate results of a research developed with teachers of Biology, Chemistry and Mathematics, in continuous formation, to which was applied an instrument to evaluate pedagogical content knowledge, called CoRe (Content Representations). Initially, a review of studies on the characteristics of the teacher's knowledge was done, and subsequently the instrument was applied to 15 participants, who answered questions about the teaching of content in their respective areas. Their answers were analyzed and it was verified that most of them have knowledge to teach the contents covered in the instrument. We conclude that CoRe needs to be applied together with other research tools, such as interviews, reports and classroom observations, so that the answers given by the teachers can be confirmed. KEYWORDS: Knowledge; teaching; teachers; continuing training

Leaf surface characters applied to lauraceae taxonomy in a seasonal forest of southern Brazil

The goal of this work was to test if the macro and micro morphological analysis of the leaf surface could provide vegetative diagnostic characters for some of the most common Lauraceae species in Southern Brazilian Seasonal Forests. The leaf printing technique with universal instantaneous adhesive was used for the epidermical microscopical analysis and external macroscospical analyses of leave were made. Microscopic evaluation revealed the visibility and contours of anticlinal walls of epidermical cell and stomata and shape of guard-cells. Macroscopic evaluation showed the absence or presence of characters such as hairiness, domatia and scents. The results showed that analyzed characters, together with other diagnostic characteristics, could contribute in taxonomic delimitation of some common Lauraceae species in the Southern Brazil

Growing knowledge: an overview of Seed Plant diversity in Brazil

Abstract An updated inventory of Brazilian seed plants is presented and offers important insights into the country's biodiversity. This work started in 2010, with the publication of the Plants and Fungi Catalogue, and has been updated since by more than 430 specialists working online. Brazil is home to 32,086 native Angiosperms and 23 native Gymnosperms, showing an increase of 3% in its species richness in relation to 2010. The Amazon Rainforest is the richest Brazilian biome for Gymnosperms, while the Atlantic Rainforest is the richest one for Angiosperms. There was a considerable increment in the number of species and endemism rates for biomes, except for the Amazon that showed a decrease of 2.5% of recorded endemics. However, well over half of Brazillian seed plant species (57.4%) is endemic to this territory. The proportion of life-forms varies among different biomes: trees are more expressive in the Amazon and Atlantic Rainforest biomes while herbs predominate in the Pampa, and lianas are more expressive in the Amazon, Atlantic Rainforest, and Pantanal. This compilation serves not only to quantify Brazilian biodiversity, but also to highlight areas where there information is lacking and to provide a framework for the challenge faced in conserving Brazil's unique and diverse flora