Bass Clef Sight Reading Practice
Most pianists learn the treble clef first and the bass clef second, and it shows: the left hand reads a beat behind the right. Two steps close the gap. Make bass-clef note names instant, then read real left-hand lines until they stop feeling foreign.
Step 1: the bass staff note drill, ten notes a round. Step 2: the passage below, at level 4: most passages are both hands, so nearly every one has a bass-clef part, and some are the left hand alone.