Making a microscope out of LEGO is not difficult and it works quite well.
Dry-mounted permanent slides do not use a mounting medium. It is necessary to hold the cover glass in place using adhesive tape.
A drop of inorganic fertilizer greatly enhances the growth of algae in a mini-aquarium.
Tardigrades (water bears) can be found in moss.
Focus animation of the leg of a bee.
Short answer: Don’t. Do not make hay infusions, as this is too risky.
The wet mount is the most common way of preparing objects for microscopic observations.
Many every day objects can not be directly viewed under the compound microscope, because they simply do not meet the criteria. These objects must first be prepared.
Correctly switching on the microscope protects the light bulb and your eyes.
Apply some nail polish to make impressions of leaves. This way you can observe the epidermis of the leaf.