terça-feira, 27 de maio de 2008

Matemática atual

É.... as coisas estão mudando... E eu começo a constatar que estou ficando velha ou muito ultrapassada.

Estava ajudando meu filho a estudar Matemática (da segunda série) para a prova de hoje e percebi que não se usa mais tabuada como antigamente. Agora, a multiplicação é utilizada com outra nomenclatura: dobro, dobro do dobro e dobro do dobro do dobro. Deu para entender?

Estou falando da multiplicação de 2, 4 e 8. Para se chegar ao número 16, a professora diz, por exemplo: é o dobro do dobro de 4...

Se por um lado, esta forma estimula as crianças a pensarem de uma maneira lógica, nós aqui (os pais ) ficamos meio perdidos com este progresso. Eu, por exemplo, estou re-aprendendo muitas coisas, dentre elas: a régua de cousiner (que nunca tinha ouvido falar), as contas de diminuir tirando emprestado o número do lado, e a utilização de gráficos e tabelas para representar as multiplicações.

Acho este método atual muito mais interessante e fascinante. Faz a criança pensar e raciocinar de uma forma prática, lúdica e criativa. Além de estimular desde cedo a criança a ter noções de espaço!!!

Um dos exercícios propostos era desenhar um quadrado de 8 linhas e 10 colunas e dividir depois em 5 retângulos idênticos.

Deixei meu filho fazer e fiquei observando. Para ele foi super fácil. Ele desenhou o quadrado e depois foi visualmente resolvendo a questão. Já para mim, tive que reler várias vezes o enunciado para perceber o que era pedido. Multipliquei primeiro, depois dividi... e só então consegui desenhar. Ele resolveu tudo apenas desenhando o que era pedido...

Afe!

12 comentários:

Anônimo disse...

Ái, Andrea, agora vc me assutou! Não sei na-da de matemática... nem o básiquinho-essencial...

tô lascada!

bjs

Annix disse...

que bacana!

Arnaldo Heredia Gomes disse...

Dobro do dobro do dobro? Nunca ouvi falar nisso.

Sou do tempo da tabuada. Elas eram vendidas nuns livretinhos em papel vagabundo, no centro da cidade. A gente decorava.

Quando eu ia pra casa do meus avô ele "tomava" a tabuada dos netos. O evento metia medo nos meus primos e eu me divertia. A gente ficava na frente dele, com a mão espalmada e ele, com uma reguinha de madeira, pronta pra dar uma "reguada" a cada erro. Meus primos saiam com as mãos vermelhas. Eu nunca senti aquela dor. Acertava tudo, saia com a mão intacta, mas não posso negar que senpre tive uma certa inveja por não ter, nunca, sentido aquela dor.

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