Reflection: Data Analysis Describing Ratios - Section 2: Intro to New Material

 

I am focusing on student annotations this year as one way my students make sense of problems.  This focus area fits in nicely with this lesson, and helped my students to avoid a common mistake of listing the terms in a ratio in the incorrect order.  

I have my students underline the terms that are being compared in the ratio, and then have them annotate by writing x under the first term and y under the second term.  I teach ratios as being x to y (or x:y or x/y), so annotating in this way reinforces one of the key ideas from this lesson.

My data from the exit tickets this year shows a stronger level of mastery after this first lesson than I've seen in previous years, and I believe annotations are one reason for this. 

You can see a student annotation sample here.  

  Data Analysis: Student Annotations
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Describing Ratios

Unit 5: Rates and Ratios
Lesson 1 of 13

Objective: SWBAT understand the concept of ratio and use ratios to describe a relationship between two quantities

Big Idea: A ratio expresses a relationship where for every x units of one quantity there are y units of another quantity.

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Subject(s):
Math, Number Sense and Operations, compare numbers, term, ratio
  60 minutes
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