To make one from raw materials would take a professional glassmaker to do so. The simplest way that I know of is one I used to make when a child. You need a short length of wire, about six inches, something like a paper clip. Twist the wire around a round pencil until you form a loop. Rub the loop with vasolene or some other grease. Dip to loop into a glass of water untill you have a globuel of water hanging within the loop.Wallah! you have a magnifying glass. Be careful not to shake the wire or the water will drop off, but you can re dip it again. You cannot do this with anything much larger than a round pencil.
You can use a glass cup if it's specially designed.
convex
Another type of lens is the opposite called a reducing lens.
Depends on your microscope. We've got one that's a x2.
It makes objects appear larger than the objects are
Convex lens
Convex lens makes objects appear closer and corrects hyperopia (far-sightedness).
Convex lens make objects look bigger, Concave makes it smaller and farther away
diverging lens
if you are using A+ it is lens
Yes, convex lens make objects loook bigger
A magnifying lens is convex i.e. it bulges outwards. A concave lens would make objects appear smaller.
A convex lens is curved outward on both sides. Also, a convex lens, is used to enlarge objects.