In which case, the reason is that you want the kids to see the crystal grow over time.

I'm thinking about the way that crystals or cells grow.

Time is a crystal, growing in a higher dimensional medium.

These crystals grow, as sugar from the mother liquor forms around them.

The real challenge that she sees is explaining how two crystals grew the same.

I sincerely doubt if there is more than one place where these crystals grow.

As the crystals grow and fall, they pass through the base of the cloud, which may be above freezing.

"Through there is the place where the crystals grow."

The pool has begun to fill once more with the milk from which crystals grow.

Captain Chin once told her that the only way was to return to the chamber where the crystals grow.