Perceptle Split: place the proportion
Read the requested fraction or percentage and the named end of the line. Place the marker at that share of the whole length, then release to submit. Normal targets fall between 15% and 85% and can be measured from either end.
Check the starting end first
The same fraction from the right and from the left produces different positions. Before moving, identify the endpoint named in the instruction and imagine the whole line extending from it.
Drag or tap to position the marker, then release to lock the answer. The reveal shows your placement alongside the requested point, making the direction of your miss easier to understand.
Use a simple landmark to refine the estimate
Find half of the line first, then compare the target with that midpoint. Thirds, quarters and three quarters can provide additional landmarks even when the displayed fraction is less familiar.
For example, 9/14 is a little larger than one half. From the right end, that moves the target beyond the midpoint toward the left. A percentage uses the same spatial idea, just written on a scale of 100.
Scores use the share of the whole line
Split measures the placement error divided by line length. In normal mode, misses of 2.5, 5 and 7.5 percentage points of the line score approximately 90, 69 and 50. Compare other errors in the scoring examples.
Friday uses fractions greater than one, such as 4/3. The correct marker then lies beyond the opposite end of the original segment. Continue the imagined line instead of clamping the answer to an endpoint.
Questions and answers
Does a 5% miss mean five percent of the target fraction?
The reported placement miss is a share of the entire line length, so it is best read as percentage points of the full segment.
Why is a Friday target outside the line?
A fraction greater than one requests more than the whole segment. The Friday interaction allows a placement beyond its endpoint.