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Module 1 · Learning to Drive

Lesson 2 · Drawing Shapes — Knowledge ChecksAnswer key

Correct answers are marked and the explanation follows each question.

  1. Your program is Straight 20, then Turn 90. After it runs, how has the robot changed from where it started?

    1. A.It is in the same spot, facing the same way
    2. B.It has moved 20 cm forward and is now facing a quarter-turn from where it started✓
    3. C.It has turned but not moved
    4. D.It has driven in a full circle

    Blocks run in order: first the drive, then the turn. So the robot is 20 cm away AND rotated 90°. That combination — a side and a corner — is the building block of every shape.

  2. In the eight-block square, what is being repeated, and how many times?

    1. A.The Straight block, eight times
    2. B.The pair Straight-then-Turn, four times✓
    3. C.The Turn block, eight times
    4. D.Nothing is repeated

    Look at the pattern: drive a side, turn a corner. That pair appears four times — once per side of the square.

  3. A student's Repeat-4 program makes the robot drive one side and then stop. What's the most likely problem?

    1. A.The robot is out of battery
    2. B.The Straight and Turn blocks are next to the Repeat instead of inside it✓
    3. C.Repeat only works with Turn blocks
    4. D.The number 4 is too small

    Only blocks tucked inside the Repeat's mouth get repeated. Blocks stacked beside it run once — so the robot drives a single side, and the empty loop repeats nothing.

  4. A classmate's triangle isn't closing up — the robot ends facing the wrong way. They used Turn 60°. What should it be?

    1. A.90°
    2. B.120°✓
    3. C.30°
    4. D.45°

    A triangle has 3 sides: 360 ÷ 3 = 120°. The turn is the OUTSIDE angle, not the 60° inside angle — a common mix-up.

  5. What turn angle do you need to draw a regular hexagon (6 sides)?

    1. A.90°
    2. B.60°✓
    3. C.120°
    4. D.45°

    360 ÷ 6 = 60°. Split one full turn evenly across all six corners.

  6. You change a working square program from Repeat 4 to Repeat 6, and set the turn to 60°. What does the robot draw?

    1. A.A bigger square
    2. B.A hexagon (6 sides)✓
    3. C.The same square, slower
    4. D.An incomplete shape

    Six sides with 60° turns (360 ÷ 6) closes into a hexagon. The side length sets the size, not the number of sides.