Test your skill. Practice what you have learned. The virtual scope has all the same controls found on the real thing.

Microscope controls:

turn knobs (click and hold on upper or lower portion of knob)
throw switches (click and drag)
turn dials (click and drag)
move levers (click and drag)
changes lenses (click and drag on objective housing)
select a specimen (click on a slide)
adjust oculars (in "through" view, with the light on, click and drag to move oculars closer or further apart)