Math1125DayThreeNotesDone.notebook
August 27, 2012
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Math1125DayThreeNotesDone.notebook
August 27, 2012
Could you find another solution if you knew that the area of the large pie was twice the area of the small pie?
1.414213 feet in diameter
1 foot in diameter
What if nobody wanted to have some from both pies? Could you still divide it up evenly among the 6 people?
What if there were 8 people?
Math1125DayThreeNotesDone.notebook
Activity 2A
1. Take a blank piece of paper and imagine that it is 4/5 of the area of some larger piece of paper. Fold your paper to show 3/5 of the larger (imagined) piece of paper.
Do this carefully and precisely without using a ruler or measuring. Explain why your answer is correct. Could two people have different­looking solutions that are both correct?
August 27, 2012
Math1125DayThreeNotesDone.notebook
August 27, 2012
2A #2 Benton used 3/4 of a cup of butter to make a batch of cookie dough. Benton rolled the batter out into a rectangle as shown below. Now he wants to cut off a piece of the dough so that the portion he cuts off contains 1/4 a cup of butter. How could he cut the dough?
Math1125DayThreeNotesDone.notebook
August 27, 2012
Activity 2B
3. When Ted was asked what the "4" in the fraction 3/4 means, he said that the "4" was "the whole". Explain why he might say that and why it isn't quite correct. What is a better way to explain what the "4" means?
Activity 2C "What is each fraction of ?"
1. At a neighborhood park, 1/3 of the area of the park is to be used for a new playground. A large swing set will be placed on 1/4 of the area of the playground. What fraction of the neighborhood park will the swing set be?
Math1125DayThreeNotesDone.notebook
2. Ben is making a recipe that calls for 1/3 cup of oil. Ben has a bottle of oil that contains 2/3 cup of oil. What fraction of the oil should ben use for his recipe?
What if his bottle had originally contained 1/2 a cup of oil? What fraction of that would he need to get 1/3 cup of oil?
August 27, 2012