"A História da Matemática": como números e frações estão presentes em nosso cotidiano
Autor: Eduardo Sousa | Publicado: 2012-01-13T05:02:00-08:00

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INTRODUÇÃO
Produzida pela renomada rede inglesa BBC, A História da Matemática é uma série de quatro capítulos lançada em 2008. Os episódios são apresentados por Marcus du Sautoy, professor da Universidade de Oxford, que desde os primeiros minutos preocupa-se em demonstrar como a Matemática faz parte do nosso cotidiano. A jornada começa no Egito antigo, com o uso do sistema decimal, e termina nos dias de hoje, passando por Grécia, Babilônia, Índia, Oriente Médio, Europa e América. A sugestão é da professora Daniela Padovan, mestre em Educação Matemática e diretora da EMEI Pero Neto.
OBJETIVOS 
Estabelecer a relação entre a divisão de números naturais e as frações.
CONTEÚDOS 
História da Matemática, relação entre divisão e fração e composição de frações.
TRECHOS SELECIONADOSA partir da divisão dos pães até o final da explicação sobre fração do Olho de Órus (10m24s a 13m24s).
ATIVIDADE 
Passe o trecho selecionado (clique aqui para assistir). Faça uma pausa aos 10m48s e proponha que os alunos solucionem o problema apresentado. Em seguida, exiba o trecho em que é apresentada a solução do problema e compare com as respostas encontradas pelos alunos. Existem diferentes maneiras de resolvê-lo. Represente, em linguagem matemática, a divisão dos 9 pães entre 10 pessoas, chegando à fração irredutível: 1/2 + 1/3 + 1/15 = 27/30 = 9/10. Em seguida, peça que eles explorem a soma das frações do Olho de Órus, que pode se aproximar de 1, sem, porém, chegar ao inteiro (1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64 = 63/64). O mesmo ocorre se continuarmos a somar mais "metades": 1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64 + 1/128 + 1/256 = 255/256. 

AVALIAÇÃO 
Observe a participação na atividade e se os alunos solucionam os problemas.&nbsp;
  Informações obtidas da Revista Nova Escola, no link: http://revistaescola.abril.com.br/fundamental-2/historia-matematica-como-numeros-fracoes-estao-presentes-nosso-cotidiano-639065.shtml