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Module 3 · Grid Driving

Lesson 1 · Introduction to the Grid — Knowledge Checks

Name Date

  1. Do you need to change your LineTrack class to drive on the grid?

    1. A.Yes — grids need a whole new class
    2. B.No — a grid intersection looks just like the Module 2 cross, so LineTrack works unchanged
    3. C.Yes — you must rewrite track_until_cross()
    4. D.Only the sensor class changes

    Answer Why?

  2. Which LineTrack method drives the robot from where it is to the next intersection?

    1. A.turn_right()
    2. B.track_until_cross()
    3. C.turn_left()
    4. D.get_error()

    Answer Why?

  3. You run the program and the robot reports 'Intersection reached!' instantly without moving. Why?

    1. A.The battery is dead
    2. B.It started sitting on an intersection, so both sensors were already high
    3. C.track_until_cross() is broken
    4. D.The threshold is too low

    Answer Why?