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6-8 Grade 8 Unit 1 Lesson 3

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K-5 Math •6-8 Math 9-12 Math

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Grade 6 Grade 7 •Grade 8

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•Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 Unit 7 Unit 8 Unit 9

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Lesson 1 Lesson 2 •Lesson 3 Lesson 4 Lesson 5 Lesson 6 Lesson 7 Lesson 8 Lesson 9 Lesson 10 Lesson 11 Lesson 12 Lesson 13 Lesson 14 Lesson 15 Lesson 16 Lesson 17

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Unit 2
Unit 3
Unit 4
Unit 5
Unit 6
Unit 7
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Lesson 1
Lesson 2
Lesson 3
Lesson 4
Lesson 5
Lesson 6
Lesson 7
Lesson 8
Lesson 9
Lesson 10
Lesson 11
Lesson 12
Lesson 13
Lesson 14
Lesson 15
Lesson 16
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IM K-5 Math
IM 6-8 Math
IM 9-12 Math

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Unit 1, Lesson 3

Grid Moves

Grade 8

Practice

Problem 1

Student Task Statement

Apply each move described to Figure A. If you get stuck, try using tracing paper.

<p>A figure A with a point P, a line l and a point P prime on a triangular grid.</p>

A translation which takes to
A counterclockwise rotation of Figure A, using center , of
A reflection of Figure A across line

Lesson 3 Resources

Student Materials Student Materials in Spanish

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Problem 2

Student Task Statement

Here is triangle drawn on a grid.

On the grid, draw a rotation of triangle , a translation of triangle , and a reflection of triangle . Describe clearly how each was done.

Triangle A B C on a grid. Let (0 comma 0) be the bottom left corner. Then the coordinates of triangle A B C are A(3 comma 8), B(5 comma 7) and C(8 comma 9).

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Problem 3

ForLesson 2: Naming the Moves

Student Task Statement

Draw the translated image of so that vertex moves to . Tracing paper may be useful.
Draw the reflected image of pentagon with line of reflection . Tracing paper may be useful.
Draw the rotation of pentagon around clockwise by an angle of . Tracing paper and a protractor may be useful.

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