Reflection: Exit Tickets Writing The Constant of Proportionality Equation - Section 4: Exit Ticket

 

After review the exit ticket, I realized I needed to do a better job making sure everyone was able to read values on a graph.  Several students who seemed to be doing fine when working with a neighbor had difficulty reading the scale of the graph of JM's Mowing Rates.  They do not realize that the y-axis is scaled in increments of 20.  I am seeing the coordinates as (2, 99) because 99 is one line below 100, when it should be (2, 80).  The other thing that I need to emphasize is that if a graph shows a proportional relationship (this one does) then each rate of y/x should evaluate to the same value.  I have students correctly finding something like (10, 400) but then writing (2, 100); this is not a proportional relationship.

 

So in summary, I should: 1) do a better job making sure ALL students know how to interpret scales/intervals on the x- or y-axis of a graph; 2) make sure students realize that in the graph of a proportional relationship all rates of y to x should simplify to the same value. 

  Improving Exit Ticket Results
  Exit Tickets: Improving Exit Ticket Results
Loading resource...
 

Writing The Constant of Proportionality Equation

Unit 2: Proportional Relationships
Lesson 10 of 12

Objective: SWBAT determine and write the constant of proportionality as an equation in the form m=y/x

Big Idea: Students will write constant of proportionality equations from problems represented in graphs.

  Print Lesson
12 teachers like this lesson
Subject(s):
Math, Number Sense and Operations, unit rate, constant of proportionality, graph, equation
  40 minutes
constantofproportionality anchorchart
 
1
2
3
4
Similar Lessons
 
Earth Layers to Scale
7th Grade Science » Earth Science
Big Idea: Hmmm.... you said that the Earth's crust is only 2% of the total of the Earth' s layers, but it doesn't look that way in the drawings I've seen.
  Favorites(17)
  Resources(13)
Hope, IN
Environment: Rural
Deborah Gaff
 
End of Grade Review: Tables, Graphs, and Equations of Proportional Relationships
7th Grade Math » Culminating Unit: End of Grade Review
Big Idea: The origin makes all the difference in this relationship.
  Favorites(19)
  Resources(15)
Elon, NC
Environment: Suburban
Heather Stephan
 
Purchasing Cardstock - Earning Every Proportional Change
8th Grade Math » Linear Equations in two Variables
Big Idea: Use proportional reasoning to earn money and purchase cardstock for a project.
  Favorites(1)
  Resources(9)
Bowling Green, KY
Environment: Suburban
Christa  Lemily
 
Something went wrong. See details for more info
Nothing to upload
details
close