Answer:
I can be cracked made told and played.
I can be found after you remove 6 letters from BSAINXLEATNTEARS
Taken from a mine and then locked up in a wooden case. I am used by students everyday.
small land in water.
I wear a green jacket on the outside white jacket as a second layer and red jacket inside. I am pregnant with a lot of babies. (one word)
No matter how little or how much you use me, you change me every month.