Tuesday, December 6, 2016

GCF Word Problems

It has been such a while since I've made a post! My nephews were victims of a major car accident days ago and are currently recovering.  I am also sick with the flu and wasn't able to teach yesterday.

We've been going over GCF word problems in class! Today I had students look at the following task from Illustrative Mathematics: Bake Sale Task


The idea is for students to gain the understanding that the cookies can be arranged into different numbers of bags based on the factors of the total number of cookies. Example:

48 Chocolate Chip Cookies can be arranged in the following ways:



Later students develop an understanding that if they are to arrange the vanilla wafers and the chocolate chip cookies into bags with the same amount of cookies in each bag and none left over, that the only way to do so would be by using common factors of 48 and 64.

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