module 2 lesson 3 class notes
TRANSCRIPT
Module 2 Lesson 3 Interpreting and Computing Division of a Fraction by a Fraction—More Models.notebook
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please complete & hand in exit ticket 2
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Lesson 2 Homework Review
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MODULE 2 Arithmec Operaons Including Division of Fracons
Topic A: Dividing Fracons by Fracons Lesson 3: Interpreng and Compung Division of
a Fracon by a Fracon—More ModelsStudent Outcomes
§ Students use visual models such as fracon bars and area models to show the division of fracons by fracons with common denominators.
§ Students make connecons to the mulplicaon of fracons. In addion, students understand that the division of fracons require students to ask, “How many groups of the divisor are in the dividend?” to get the quoent.
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Opening ExerciseDraw a model to represent 12 ÷ 3
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How could we reword this queson?
If we divide 12 into three groups of equal size, what is the size of each group?
If we divide 12 into groups of size 3, how many groups would we have?
If I have 12 chickens and I put 3 chickens in each cage, how many cages will I need?
If I have 12 flowers and I place 3 flowers in each vase, how many vases will I need?
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89
÷ 29 =Example 1
Draw a model to show the division problem.
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Example 2
912 ÷ 3
12 =
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Example 3 79 ÷ 3
9 =
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Exercises 1–6
For the following exercises, rewrite the division problem. Then be sure to draw a model to support your answer.
1. How many fourths are in three fourths?
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How are Example 2 and Exercise 1 similar?
Example 2: Exercise 1:=3 =3
What conclusions can you draw from these observaons?
When the dividend and divisor are scaled up or scaled down by the same amounts, the quoent stays the same.
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2.
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3.
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4.
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5.
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6.
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Closing
Please take out your exit ticket for Lesson 3, close your binder, and complete the exit ticket. This will be collected.