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Engage with reflections and translations in the coordinate plane through guided and independent activities. Review key concepts and practice questions on transforming points and shapes. Collaborate with peers and participate in interactive learning exercises. Enhance your skills in geometric transformations.
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10/7 Bell Ringer Step 1: Grab supplies from the front of the room Step 2: GET OUT YOUR HOMEWORK Step 3: Answer the following questions: What are the coordinates of (4, 7) if reflected over the x-axis? What are the coordinates of (-4, 2) if reflected over the y-axis? What are the coordinates of (-5, -6) if reflected over the line y = x? Homework: Translations in Coordinate Plane Independent Practice
10/7 News and Notes • Homework checked? • Grades go in today for progress reports.
10/7 Agenda • I CAN translate an object within the coordinate plane. • Bell Ringer • Intro to New Material – 2 examples • Guided Practice • Independent Practice
New Material – Example 1 • Step 1: Plot points A(3, 9) B(1, 2) and C(6, 4) and create the triangle. • Step 2: Translate the triangle 3 units to the right and 4 units down. • Step 3: What are the points of your image? • A’ = (6,5) • B’ = (4, -2) • C’ = (9, 0)
New Material – Example 2 • Translate each point in DEFG (x – 2, y + 1). D (1, 1) E(-4, 5) F(2, -4) G(-3, -6) • Image: D’ (-1, 2) E’(-6, 6) F’(0, -3) G’(-5, -5)
Guided Practice • Between you and your elbow partner you need a whiteboard, tissue and a whiteboard marker. • Step 1: Draw a coordinate plane on your whiteboard. • Process: • Mr. Chrischilles will place a point on the board • You will plot that point while he writes the translation on the board. • Then he will reveal the translation and you will have to translate your pre-image. • **NOTE: If this goes smoothly, it could develop into a golden ticket race.
Independent Practice • You now have the rest of class to work on the independent practice.
ACT Question of the Day • Point A (-5, 8) is translated 6 units right and 2 units up. What are its image coordinates? • (-11, 10) • (1, 6) • (1, 10) • (-11, 6) Homework: Translations in Coordinate Plane Independent Practice