Mark the middle of horizontal lines as precisely as you can
This is a solo practice run: your results stay in this browser tab and are never sent anywhere. To contribute to a class result, join a live session with a code instead.
This task is new to Classperiment and has not yet been fully tested. Issues may occur in the procedure or scoring. The expected effect may also fail to appear reliably.
Task time: 2–3 min; slow up to about 6
Mark the middle of the line as precisely as you can. Click or tap there once. Use the same hand and the same input method for all lines. What counts is your estimate; you do not need to be particularly fast.
Before each line, press “Ready” and let go; the line appears a moment later and stays for up to 10 seconds. Only your first click or tap on the line counts, and it cannot be corrected. In a classroom session, the explanation and results appear after the instructor releases them.
4 practice lines, then 24 lines