Q2, W6: November 18-22 Pre-Algebra

TeacherKristin Andreason
Subject Area8th Grade Pre-Algebra
Grade Level8
Week #November 18-22
Unit of InstructionFocus 6: Transformations
Standard(s) Taught

MAFS.8.G.1.1: Verify experimental properties of rotations, reflections and translations:  Lines are taken to lines, and line segments to line segments of the same length;  Angles are taken to angles of the same measure;  Parallel lines are taken to parallel lines.

MAFS.8.G.1.2: Understand that a two-dimensional figure is congruent to another if the second can be obtained from the first by a sequence of rotations, reflections, and translations; given two congruent figures, describe a sequence that exhibits the congruence between them.

MAFS.8.G.1.3: Describe the effect of dilations, translations, rotations, and reflections on two-dimensional figures using coordinates.

MAFS.8.G.1.4: Understand that a two-dimensional figure is similar to another if the second can be obtained from the first by a sequence of rotations, reflections, translations, and dilations; given two similar two-dimensional figures, describe a sequence that exhibits the similarity between them.

Learning Targets and Learning Criteria
  • verify – by measuring and comparing lengths, angle measures, and parallelism of a figure and its image – that after a figure has been translated, reflected, or rotated, corresponding lines and line segments remain the same length, corresponding angles have the same measure, and corresponding parallel lines remain parallel.  
  • describe and apply the properties of translations, rotations, and reflections on lines, line segments, angles, parallel lines and geometric figures. (side, shape and orientation) 
  • explain how transformations can be used to prove that two figures are congruent.                       
  • perform a series of transformations (reflections, rotations, and/or translations) to prove or disprove that two given figures are congruent. 
  • describe a sequence of rigid motions to map one figure onto another. 
  • describe the changes occurring to x- and y- coordinates of a figure after a translation, reflection, rotation, or dilation.
  • reason that a 2-D figure is congruent to another if the second can be obtained by a sequence of rotations, reflections, translation.
  • describe the sequence of rotations, reflections, translations that exhibits the congruence between 2-D figures using words
  • describe a sequence of rigid motions to map one figure onto another.
  • explain how transformations can be used to prove that two figures are similar. 
  • describe a sequence of transformations to prove or disprove that two given figures are similar. 
  • know the definition of similar and why dilation alone is not enough to determine similarity. 
Classroom Activities

Monday/Tuesday:

  • Students will take notes on Translations and Reflections
  • Students will do IXL R.6.
  • Students will do a Reflections Page to practice reflections.

Wednesday:

  • Students will take notes on Rotations.
  • Students will begin IXL P.12 on Rotations.

Thursday/Friday:

  • Students will continue IXL P.12 on Rotations.
  • Students will take notes on Dilations.
  • We will look at IXL Q. 2 together to practice dilations.
Assignments Due
  • IXL P.6 is due on November 21/22.
  • IXL P.12 is due by December 4.
Additional Resources

All IEP and ESOL accommodations are provided daily.