Sequence Scrubber
Scrub the timeline to feel what the pattern is doing, then choose the frame that comes next.
Hard sequences run two rules at the same time, so you have to track them separately. Here the arrows turn 45° further every frame (0°, 45°, 90°, 135°…) and the number of arrows climbs by one every frame (1, 2, 3, 4…). Frame five must obey both: five arrows, turned to 180°.
What to say if they get stuck
- Drag the handle slowly. Watch the arrows turn - how far do they swing between one frame and the next?
- Now stop watching the turn and count the arrows instead. Something else is growing.
- Two rules run at once: the turn adds 45° each frame, and one more arrow joins each time.