You are going to have a difficult time rooting them inside. They need lots of heat to root. Your best bet would be to place them outside on a patio or somewhere that gets good morning/afternoon sun. Water the soil thoroughly, and wait until leaves begin to develop. Some early leaf claws will shrivel, turn black, and fall off. As long as the stem itself is not turning black, you should be fine. The last pic in question looks to be in pretty rough shape. I wouldn't get my hopes to high for that one. But, you definitely need to get them outside.
