PLANO DE AULA: COZINHA EXPERIMENTAL DE MATEMÁTICA
Autor: Elcielle | Publicado: 2016-10-16T17:04:00-07:00


AULA TEMÁTICA: COZINHA





PLANO DE AULA: COZINHA EXPERIMENTAL DE MATEMÁTICA







Este plano de aula foi preparado
para ser aplicada a um grupo de alunos de Licenciatura em Matemática, Química e
Física no Campus Ceunes / UFES, em Outubro de 2016. Foi criada de acordo com Multicurso
Ensino Médio – Livro do Professor – Matemática – 1ª série.






TEMA DA AULA: Grandezas Diretamente e Inversamente Proporcionais





SUGERIDO PARA: 1º ano do Ensino Médio





MATERIAIS NECESSÁRIOS PARA A AULA

<!--[if !supportLists]-->·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->Quadro negro e giz

<!--[if !supportLists]-->·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->Farinha de trigo com fermento

<!--[if !supportLists]-->·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->Açúcar

<!--[if !supportLists]-->·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->Achocolatado em pó

<!--[if !supportLists]-->·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->Leite

<!--[if !supportLists]-->·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->Medidores para mililitros e gramas






OBJETIVOS DA AULA

<!--[if !supportLists]-->·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->Aprender a resolver situações problemas que
envolvam grandezas diretamente proporcionais;

<!--[if !supportLists]-->·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->Relacionar a matemática a fatos do dia a dia do
estudante a partir de uma situação-problema concreta, assegurando a aplicação
de noções que os alunos já possuem de sua vivência;

<!--[if !supportLists]-->·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->Aplicar o conceito de razão em outras áreas do
conhecimento.



PLANEJAMENTO DA AULA:

A proposta é introduzir o tema
“Grandezas Diretamente e Inversamente Proporcionais” 

Escrever no quadro a receita:


RECEITA DE CUPCAKE

&gt; 100 gramas de farinha
de trigo com fermento

&gt; 25 gramas de açúcar

&gt; 15 gramas de
achocolatado em pó

&gt; 60 mililitros de leite



MODO DE PREPARO

Misture todos os
ingredientes até que estejam com uma consistência uniforme. Asse
individualmente no micro-ondas.

Rendimento: 2 unidades

Tempo de cozimento: 50 segundos cada unidade no micro-ondas em potência
100%







Preparar a receita na mesa do
professor e solicitar que os estudantes reflitam quanto às quantidades dos
ingredientes e tempo de preparo.



Reflexões para serem feitas com
os alunos:



<!--[if !supportLists]-->·&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Se você quiser aumentar a receita, o que deve
fazer? Se precisar reduzir?



<!--[if !supportLists]-->·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<!--[endif]-->Se diminuir a temperatura de cozimento, o tempo
de preparo vai aumentar ou diminuir?





Quando aumentamos ou diminuímos receitas
os ingredientes aumentam ou diminuem na mesma proporção. As grandezas
envolvidas nessa situação são chamadas de grandezas diretamente
proporcionais.

Quando aumentamos ou diminuímos a
temperatura de cozimento, o tempo de preparo diminui ou aumenta inversamente.
As grandezas envolvidas nessa situação são chamadas de grandezas inversamente
proporcionais.







 

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EXERCÍCIO

1. Para fazer um tipo de
    doce, são usados os seguintes ingredientes:

     

      
Farinha de Trigo

      
360 g

     

      
Manteiga

      
120 g

     

      
Ovos

      
6 unid

     

      
Açúcar

      
180 g

     


Para manter as proporções da
    receita, que quantidades de cada ingrediente devem ser

usadas caso você
    tenha apenas 240 gramas de farinha de trigo?



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Em seguida aplique o exercício para os estudantes:





Estimule o aluno a fazer
tentativas, comparar os resultados com os de outros colegas e validar seus
procedimentos.





FONTE


PITOMBEIRA, João Bosco (Coord.).
Multicurso Ensino Médio: Matemática, primeira série: livro do professor. Ana
Lúcia Bordeaux et all. 3. Ed. – Rio de Janeiro: Fundação Roberto Marinho, 2008.