Reflection: Checks for Understanding Reflection of Coordinates - Section 3: Group Work


There was some extra time after reviewing the group work with the class.  This was a great opportunity to have a quick informal assessment using verbal prompts.  I gave students a new coordinate plane grid to use and label.  

My prompts were:

1) Start at (3,5).  Reflect over the y-axis then reflect over the x-axis.  What are the new coordinates?

2)  Start at (6,-1).  Move 2 units left.  Reflect over the y-axis.  What are the new coordinates?

3)  Start at (-1,1).  Move 6 units down.  Move 4 units right. Reflect this point over the x-axis.  What are the new coordinates?

4)  Start at (-2,-3).  Reflect over the x-axis.  Move 7 units up.  What are the new coordinates?

I randomly selected students to give their answers.  

I chose a few students to give their own prompts.  This caused a lot of excitement because my students like to challenge one another.


  Additional Assessment
  Checks for Understanding: Additional Assessment
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Reflection of Coordinates

Unit 10: Rational Numbers
Lesson 5 of 9

Objective: SWBAT reflect coordinates.

Big Idea: Students reflect points over the x and y axes.

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4 teachers like this lesson
Math, Number Sense and Operations, coordinate plane, reflection
  40 minutes
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