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Answer:
Do 1. Use lens paper to clean the lenses of the microscope.
Don't 2. Touch the lenses of the microscope with your fingers.
Do 3. Keep slides and cover slips clean. Use anything OTHER than
lens paper to clean them.
Don't 4. Aim the microscope at the sun or look directly into the sun.
Do 5. When switching from one power to the next, store the objective
lens and eyepiece in the plastic storage container.
Don't 6. Before putting the microscope away, always turn the optical
tube so it's securely fastened into the optical tube support.