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Welcome to my math blog! The purpose of this blog is to help you stay informed about our learning and experiences that have taken place during our math class. I have also included links your child (and you) may want to use in order to supplement math learning in 5th grade.

Monday, October 16, 2017

Add and Subtract Fractions with Unlike Denominators: Crisscross Applesauce

Bell Ringer:  SET Game

Lesson Frame:

  • We will learn how to add and subtract proper fractions with unlike denominators using “crisscross applesauce.”
  • I will explain why it is important to have like denominators when adding and subtracting fractions.

New notes today for our math journal on adding and subtracting proper fractions with unlike denominators.  I found a visual to use with my students that I thought they would catch on to...  Crisscross Applesauce.

I also created a screencastify video showing how to use this process.


We continued to practice the process of using crisscross applesauce to add and subtract proper fractions with unlike denominators for a few minutes.  Tomorrow we will continue our practice during our rotations.


Explain why it is important for fractions to have a common denominator before they can be added or subtracted.

  • First, I had a large group of students who had not completed the Khan Assignment:  Simplify Fractions from last week, so that was their first order of business.
  • Second, students completed Fifth Grade Builder #20