Reflection: Complex Tasks Expressing Fractions, Mixed Numbers, and Division Expression - Section 5: Work It Out

 

I guarantee that you are going to have students that will try to create fractions with denominators that cannot be converted to 10 or 100. This only means that they do not (yet) have the skills to covert the fraction to a decimal. The concept of this lesson is not to be able to convert ALL fractions to decimals, but to understand the connection between fractions and decimals.

For those students that are up for the challenge: challenge them to prove why 7/10 is the same as 0.7. It is the same because you have 7 pieces out of 10. If you have 10 pieces, you would have one whole. The other way to look at it is that if you divide 7 by 10 you get 0.7. This division method can be taught after students have an understanding of the connection between fractions and decimals.

  What to do when we have denominators that can't be changed to 10, or 100
  Complex Tasks: What to do when we have denominators that can't be changed to 10, or 100
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Expressing Fractions, Mixed Numbers, and Division Expression

Unit 2: Adding and Subtracting Fractions with Unlike Denominators
Lesson 5 of 7

Objective: Students will be able to convert fractions into decimals using place value of 10ths and 100ths.

Big Idea: 0.25 is the same as 25/100. And ½ is the same as 5/10 is the same as .5

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7 teachers like this lesson
Subject(s):
Math, Number Sense and Operations, Operations , equivalent, Decimals, Fractions, equivalent fractions, fractions, decimal, Operations
  85 minutes
piet mondrian
 
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