Q2, W6: November 18-22 Pre-Algebra

Teacher Kristin Andreason 8th Grade Pre-Algebra 8 November 18-22 Focus 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.