As now all of the big kids have entered the froglet stage, I've transferred most of them into containers with shallower water and a rock to climb on. The Three Amigos also got put in an animal carrier with some water and a rock called Pinecone rock, named after the first tadpole I raised (and it was used by him.) The Fourth Amigo has the jar all to himself now.  The Lone Ranger got his own jar with a rock.

A few things to note:

As soon as their front legs come out, they apparently stop eating for the time being and their tails start to be consumed for nourishment.

For jars, it's a good idea to cover the top and poke some holes. I find coffee filter paper works great.

Anyways, on to the obligatory photos and videos, the first photo below is that of The Lone Ranger. The second is of one of the Three Amigos.  The last photo is that of the past and future staring at one another.