The use of glass

1, use the performance of the cup: drink water, store water, store, arrange flowers, raise insects, raise small fish, insert pen, mix (mix things in the cup or shake well), compared volume;
2, the use of glass glass optical properties: the bottom of the cup as a convex magnifying glass, concentrating light, cup body as a refractor;
3, the use of cup acoustic performance: put different depths of water as a musical instrument (similar to chimes), empty cup echo;
3. Use the material properties of the cup: smashing people, throwing far, defending the surface, napping small nails, grinding bugs, grinding powder, breaking and cutting things, as weapons for self-defense, marking;
4, use the shape of the cup performance: draw a circle, draw a straight line and so on.