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Coding · Grade 2

Coordinates in a Block World

Second graders name and plot squares with coordinates (x across, y up), see how each arrow move changes x or y, and use the differences in coordinates to plan Bolt the robot's routes around hedges.

  • 4 lessons
  • About 70 minutes
  • Coordinates check: 8 questions
  • Ways to answer: program with blocks, choose an answer, plot points, match pairs and type a number
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What learners will discover

  • Name a square with coordinates (x, y): x counts across from the left, y counts up from the bottom.
  • Plot a point from its coordinates.
  • Tell how each arrow move changes the coordinates.
  • Use the differences in x and y to plan a route to a target.

Lessons

  1. Across, then up 4 steps2 practiceabout 14 min
  2. Plot a point 5 steps3 practiceabout 14 min
  3. Moves change coordinates 5 steps3 practiceabout 15 min
  4. Plan routes with coordinates 5 steps3 practiceabout 16 min
  5. Coordinates check 8 questions at the end

Keep exploring

Games to practice with

  • Robot RoutesSnap together arrow, repeat and dance blocks to guide Bolt the robot home.
  • Bug DetectiveA robot program almost works. Run it, spot the buggy block, and fix it.
  • Mini-Game StudioMake a tiny game with rule blocks, test-play it, and share it once it can be won.

More 2nd grade coding

Guide for grown-ups