Current Unit: Unit 1a Geometric Transformations
Unit Standards: MCC8.G1, MCC8.G2, MCC8.G3, MCC8.G4
Crosswalk COACH Connection: Lesson 24
Due to ITBS testing and the shortened classes, we did not move as quickly as I anticipated last week. As such, we will complete the first part of the Rigid Transformations mini unit this week. Students have completed the first part (a performance task) of the 2-part unit assessment on Friday and will take the second part, which is a traditional test in class on Tuesday.
On Wednesday, we will begin an exploration of non rigid transformations -- dilations. Students will understand that dilations stretch or shrink figures proportionately. Students will learn to determine if a figure has been dilated or distorted by analyzing the relationships between corresponding sides and angles. Since we did not have an opportunity to use rigid transformations to prove or disprove congruency last week, I will add that to this week's lesson plan. In addition, students will explore congruency versus similarity and use rigid and non-rigid transformations to prove whether figures are congruent, similar, both or neither.
In order to be successful with this unit, it is imperative that students are well versed with the following unit terms.
- transformation
- pre-image
- image
- translation
- vertical
- horizontal
- rotation
- angle of rotation
- point of rotation
- clockwise
- counterclockwise
- reflection
- line of reflection
- line of symmetry
- symmetrical
- congruent
- similar
- dilation
- distortion
- corresponding sides
- corresponding angles
Below is an outline of this week's agenda. This outline is subject to change based on the needs of the students.
MON
-- LABOR DAY - Schools Closed
TUE
-- Review Transforming BOB Performance Task
-- Rigid Transformations Test
-- HW - Graphing points to create figures (create figures for Dilations in the Coordinate Plane Task)
WED
-- Dilations in the Coordinate Plane Task (Analyze figures - determine relationships)
-- Discuss similarity / proving similarity (Notes - similar figures)
-- HW - Dilations practice
THU
-- Compare & contrast congruence and similarity
-- Demonstrate how how transformations can be used to prove congruency and/or similarity.
-- Use transformations to determine if figures are congruent, similar, both, or neither
-- HW - Changing Shapes Task
FRI
-- Transformations Practice
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Advanced Math
Students in advanced math have moved through the unit more quickly. They completed the assessment on Thursday and began the Dilations in the Coordinate Plane Task on Friday. Their agenda for the week is as follows:
MON
-- LABOR DAY - Schools Closed
TUE
-- Dilations in the Coordinate Plane Task (Analyze figures - determine relationships)
-- Discuss similarity / proving similarity (Notes - similar figures)
-- HW - Dilations practice
WED
-- Compare & contrast congruence and similarity
-- Demonstrate how how transformations can be used to prove congruency and/or similarity.
-- Use transformations to determine if figures are congruent, similar, both, or neither
-- HW - Changing Shapes Task
THU
-- Congruent vs Similar Triangles (Proofing Triangle Congruence)
-- HW - Triangle Congruence Practice
FRI
-- Transformations Practice