Autor: Anderson Eduardo | Publicado: 2012-05-04T01:06:00-07:00



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Plano de Aula 04/05/12

Objetivo

Objetivo: desenvolver o raciocínio lógico e
aprimorar a capacidade de resolver problemas diversos por meio da interpretação
de informações contidas em textos, utilizando conhecimentos matemáticos
prévios.

.

Desenvolvimento

Situações
Problemas= onde serão explorados conhecimentos de matemática
adquiridos pelos educandos em adição subtração utilizando horas e conceito de
centavos aplicados uma situação problema que envolve numeros expressos em R$
(reais);

Atividade de antecessor
e sucessor, onde será analizada a capacidade de ordenação dos educandos e o
conceito de sequencia dos numerais que os educando já possuem;

Tabuada=
Exploração da tabuada utilizando como referencia o aprendizado já adiquirido
tendo inicio na do 2 e seguindo até onde o tempo bem como o desenvolvimento
permitir.

Avaliação

Se dará através da
análise das respostas e aplicação dos conceitos matemáticos pelos educandos.















INTRODUÇÃO
O sistema de numeração que normalmente
utilizamos é o sistema de numeração decimal,
pois os agrupamentos são feitos de 10 em 10 unidades. Os símbolos matemáticos utilizados para representar um
número no sistema decimal são chamados de algarismos: 0, 1, 2, 3, 4, 5,
6, 7, 8, 9, que são utilizados para contar unidades, dezenas e
centenas. Esses algarismos são chamados de indo-arábico porque tiveram origem
nos trabalhos iniciados pelos hindus e pelos árabes. 


Com os algarismos formamos numerais (Numeral é o nome dado a qualquer representação de um
número). 



Veja
um exemplo de como contar o conjunto de bolinhas a seguir, agrupando-as de 10
em 10: 

 
 
  
  
  
  
  
  
  
  
  
  
  
  
 
 
 

 

Igual a 35 bolinhas. 



 

  
  
3
  grupos de 10 bolinhas

  
  
mais

  
  
5 bolinhas

 

  
  
3 x 10

  
  
+

  
  
5

 

  
  
30

  
  
+

  
  
5

 




A Partir do agrupamento de 10 em 10 surgiu a
primeira definição: o grupo de dez unidades recebe
o nome de dezena. Assim cada grupo de 10
dezenas forma uma centena. Os grupos de 1,
10, 100 elementos são chamados de ordens. Cada ordem
forma um novo grupo denominado classe. 







Exemplos: 
• O número 352 possui 3 ordens e uma classe. 






 

  
  
3

  
  
5

  
  
2

 

  
  
centena

  
  
dezena

  
  
unidade

 

3 → Ordem das centenas 
5 → Ordem das dezenas 
2 → Ordem das unidades&nbsp;

Estou ansioso para aplicar esta aula pois pessoalmente adoro matemática e será uma boa sondagem para esta semana.