UNIT 1 • LESSON 1 MOVING IN THE PLANE[list][*][url=https://hcpss.instructure.com/courses/93828/pages/1-dot-1-moving-in-the-plane?module_item_id=2413938#kl_panel_0_content]Setting the Stage[/url][/*][*][url=https://hcpss.instructure.com/courses/93828/pages/1-dot-1-moving-in-the-plane?module_item_id=2413938#kl_panel_1_content]1.1: Which One Doesn’t Belong: Diagrams[/url][/*][*][url=https://hcpss.instructure.com/courses/93828/pages/1-dot-1-moving-in-the-plane?module_item_id=2413938#kl_panel_2_content]1.2: Triangle Square Dance[/url][/*][*][url=https://hcpss.instructure.com/courses/93828/pages/1-dot-1-moving-in-the-plane?module_item_id=2413938#kl_panel_3_content]Are You Ready For More?[/url][/*][*][url=https://hcpss.instructure.com/courses/93828/pages/1-dot-1-moving-in-the-plane?module_item_id=2413938#kl_panel_4_content]Summary[/url][/*][/list]WHAT YOU WILL LEARNIn this lesson, I will describe ways figures can move in the plane.I can...[list][*]Describe a translation, rotation, or reflection in the plane in one’s own words.[/*][/list]I will know I learned by...[list][*]Demonstrating that I can describe how a figure moves and turns to get from one position to another.[/*][/list][b] FAMILY MATERIALS:[/b]To review or build a deeper understanding of the math concepts, skills, and practices in this lesson, [url=https://im.openupresources.org/8/teachers/1/family_materials.html]visit the Family Materials provided by Illustrative Mathematics Open-Up Resources. (Links to an external site.)Links to an external site.[/url]Which one doesn’t belong?   [img width=550,height=168]https://hcpss.instructure.com/courses/93828/files/10332640/preview[/img]Your teacher will give you three pictures. Each shows a different set of dance moves.[list=1][*]Arrange the three pictures so one of you can see them right way up. Choose who will start the game.[list][*]The starting player chooses one of the three applets below and describes the dance to the other player.[/*][*]The other player identifies which dance is being talked about: A, B, or C.[/*][/list][/*][*]After one round, trade roles. When you have described all three dances, come to an agreement on the words you use to describe the moves in each dance.[/*][*]With your partner, write a description of the moves in each dance.[/*][/list]Dance A: [url=http://im.openupresources.org/8/students/1/1.html#geogebra-wrapper-AEJZpFYq-1491364060]Geogebra Applet (Links to an external site.)Links to an external site.[/url]Dance B: [url=http://im.openupresources.org/8/students/1/1.html#geogebra-wrapper-NSQmZf7q-1491364060]Geogebra Applet (Links to an external site.)Links to an external site.[/url]Dance C: [url=http://im.openupresources.org/8/students/1/1.html#geogebra-wrapper-edxPr72G-1491364060]Geogebra Applet (Links to an external site.)Links to an external site.[/url]We could think of each dance as a new dance by running it in reverse, starting in the 6th frame and working backwards to the first.[list=1][*]Pick a dance and describe in words one of these reversed dances.[/*][*]How do the directions for running your dance in the forward direction and the reverse direction compare?[/*][/list]Here are two ways for changing the position of a figure in a plane without changing its shape or size:Sliding or shifting the figure without turning it. Shifting Figure A to the right and up puts it in the position of Figure B.[img]https://cms-k12oer-staging.s3.amazonaws.com/uploads/pictures/8/8.1.A1.Image04.png[/img]Turning or rotating the figure around a point. Figure A is rotated around the bottom vertex to create Figure C. [img]https://cms-k12oer-staging.s3.amazonaws.com/uploads/pictures/8/8.1.A1.Image05.png[/img]