2. The boy is wondering what to use to clean the

microscope lenses. The lens tissue has been

treated to prevent scratching. What should one

use to clean?

Why?

2. The girl is focusing a slide and she is moving the stage up toward the slide.

a) What has happened to the slide?

b) Is this the proper way to focus?

c) Should you focus by moving stage up or down?

d) What happens to a microscope if place at the edge?

e) What should you do to prevent this from happening?