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Accelerated Lesson

8.1.1 Sliding Into Place: Translations On and Off the Grid

Shared by A STEM Educator★ Featured Teacher · rated 90+ in our quality review

7 and 8BTC Style / Thinking ClassroomsSub-Unit 1, Lesson 140 min
Learning Objective

Students will perform translations of two-dimensional figures on and off a coordinate grid, describe translations using coordinate rules and vectors, and verify that translated figures are congruent to the original.

Lesson Overview

Students progress from identifying translations on a coordinate grid to describing and performing translations using algebraic notation, culminating in translating figures off the grid using vector notation.

Materials

  • Vertical whiteboards or large chart paper
  • Dry-erase markers (multiple colors)
  • Pencils and paper for note-taking

Scaffolded Task Progression

1Task 1
Triangle has vertices , , . Plot it on the grid. Then slide the entire triangle 4 units to the right. Plot the new triangle and label its vertices A', B', C'. Write the new coordinates.


[ Interactive graph / diagram, available in the full lesson ]
2Task 2
Same triangle : , , . This time slide it 4 units down. Write the new coordinates of A', B', C'.


[ Interactive graph / diagram, available in the full lesson ]

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