Monday, November 12, 2012

Fractions: Explaining the operations

I hope you had a great weekend!

Objectives:

  • I will use models to represent division of fractions.
  • I will summarize the four basic operations with fractions.

Language

  • I will create visuals with explanations that describe a mathematical concept.

November Process Words

  • Adapt
  • Verify

Opening: With a partner (selected by the magic cards!), please create a model using construction paper that shows the following problems (one model / problem):

  1. A serving is 3/4 of a Snickers bar, how many servings can be made from 1/2 bar.


  1. If a serving is 5/8 of a bar, how many servings can be made from 1/2 of a Snicker's bar.

Please create a model (sketch) in your notebook to show

1. I have 3 whole cakes. They fill up exactly 2/3 of my container.
     a. How much cake will fit in 1/3 of my container?
     b. How much cake will fit in 1 whole container?

2. I have 1/2 of a cake. it fills up exactly 3/4 of my container.
     a. How much cake will fit in 1/4 of the container?
     b. How much cake will fit in 1 whole container?

3. I have 3/4 of a cake. it fills up exactly 2/3 of my container.
     a. How much cake will fit in 1/3 of the container?
     b. How much cake will fit in 1 whole container?


4. 2/5 of a room can be painted in 3/4 of an hour. How much can be painted in 1 hour?



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