Reflection: Conferencing Hands-on Exploring the Movement of Reflections in the Plane - Section 2: Beginning the Activity


I was amazed at how many students chose to use a ruler and protractor instead of tracing paper.  My students used a variety of techniques to achieve the reflection.  Most used a ruler and measured the distance of each vertex to the line and at their best 90 degree angle measured the same distance on the other side.  These students contributed great ideas to our group discussion as we brainstormed important properties onto their unit organizer for reflections.  One student had a very unconventional method that really worked out well and many students adopted it after he presented.  By the way, he was a struggling learner until this year when he has really shone with conceptual understanding.  He put pencil lead on the original image by tracing it with his pencil.  Then he folded the paper along the line of reflection and rubbed off a graphite transfer of the image on the opposite side.  After he demonstrated his method we had a great discussion about folding paper to find the line of reflect between two images and what the image and pre-image should look like when folded.  Really neat how they all approached the task.

  Formative Assessment - Conferencing
  Conferencing: Formative Assessment - Conferencing
Loading resource...

Hands-on Exploring the Movement of Reflections in the Plane

Unit 6: Transformations
Lesson 4 of 23

Objective: Students will be able to understand the movement of a reflection and the properties of a reflected image on a conceptual level.

Big Idea: Students learn about the movement of a reflection through using tracing paper.

  Print Lesson
24 teachers like this lesson
Math, reflection (Geometry), Geometry, Transformations (Geom), Manipulative Skills, tracing paper, hands, manipulatives, 8th grade
  60 minutes
camera reflection student pre assessment
Similar Lessons
Playing with Parabolas - Hands on
8th Grade Math » Advanced Equations and Functions
Big Idea: Students become acquainted with simple quadratic equations! They graph and explore parabolas and gain their first experiences with quadratic function vocabulary and transformations.
Orlando, FL
Environment: Urban
Mauricio Beltre
Day Four & Five
8th Grade Math » Welcome Back!
Big Idea: To help guide instruction for the year and establish a baseline for quarterly benchmark assessments, students will take a benchmark test aligned to the CCSS.
Oklahoma City, OK
Environment: Urban
Heather Sparks
Introduction to congruence and similarity through transformations
Big Idea: Which one of these is not like the other? Investigate how Sesame Street is connected to congruence and similarity.
New York, NY
Environment: Urban
Jeff Li MTP
Something went wrong. See details for more info
Nothing to upload