Reflection: Rigor Skill Based Mixed Review - Section 4: Independent Practice


Often times, students are asked solve word problems. I have increased the rigor by asking students to write their own examples.  When writing word problems, students need to make sense of the operation and choose reasonable situations to represent the equation.  To help provide some structure, I ask students to write problems about equations they have already solved.  This allows me to push their thinking to write a problem without expecting them to generate the problem as well.

Students are likely to have the most difficulty when writing a problem to represent a fraction multiplied by (x) another fraction situation.  Here, they are finding a part of a whole.  This can seem similar to subtraction of fractions (where they are taking part of a whole away from part of a whole).  I made the decision to let the students try writing these problems with no advance assistance.  I think they will learn more from their mistakes than copying a model problem I create.  

These ideas are complex and need constant revisiting to help students really make sense of them.  I think moving forward I will do some modeling with students in the class.  Physically moving them into groups to show the difference between subtraction and multiplication with fractions.  

For example:

5/10 of the class is standing.  If 3/10 of the class sits down, how many will be standing?

5/10 of the class is standing.  If 3/10 of that group sit down, how many will be standing?

These complex concepts are challenging for the students, but it is important to push their thinking. By asking them to write their own problems, I am teaching them to consider these important details. Then, when solving problems they can use the same details to determine the operation to use. 

  Rigor: Adding rigor
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Skill Based Mixed Review

Unit 4: Multiplying and Dividing Fractions
Lesson 12 of 13

Objective: SWBAT solve problems involving addition, subtraction, multiplication, and division with fractions.

Big Idea: Students have an opportunity to show what they know about fractions in this skill based mixed review activity.

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3 teachers like this lesson
Math, subtracting functions, Fractions, Number Sense and Operations, adding fractions, multiplying fractions, dividing with fractions, Critical Area
  35 minutes
screen shot 2014 04 17 at 11 23 09 am
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