Reflection: Developing a Conceptual Understanding Solving Multi-Step problems giving part to whole ratios - Section 3: Whole Group Discussion


As we began to have our whole group discussion, the trend was that students could not understand the relationship between the ratio to the actual amounts.  For example, in question 1 the problem stated that 1/3 black cages were sold.  It further states that there were 240 black cages sold.  The students did not know what to do with this information in order to find the number of silver cages sold.  We started with reviewing 1/3 is 1 out of 3.  3 being the whole.  If 1 out of 3 were black, that means 2 out of 3 were silver.  Once my students were able to use the given ratio in the text to find the missing ratio, they were off for the races.  They then understood each cage represents 240.  This led to being able to find the number of silver cages. The key here is for students to use the given ratio to find the missing ratio.  

  Understanding How to find part to part ratios give light bulb moments!
  Developing a Conceptual Understanding: Understanding How to find part to part ratios give light bulb moments!
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Solving Multi-Step problems giving part to whole ratios

Unit 4: Proportional Relationships
Lesson 10 of 10

Objective: SWBAT solve multi-step problems given part to whole ratios.

Big Idea: Using MP 1, 2, 3, 4, and 6 students will grapple through and solve rigorous multi-step real world problems given a part to whole ratio.

  Print Lesson
Math, proportions, modeling, pairing, Number Sense and Operations, group work, proportional relationships, ratios, proportional reasoning, part to whole ratio
  40 minutes
part to whole ratio
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