I cut 2"x2" tiles from clay and let them air dry until they are bone dry and then I put them in an open container in my cabinet.
|2"x2" tile in water|
When the clay tile has set for about 4 hours, I will use a tool, popsicle stick, whatever is handy, to start to mash the wet clay into the water until it starts to look like a thick paste. I then cover the clay and water mixture and store until it is needed. If I make it a day or two before I need it, it is nice and smooth when it is used.
|1 bowl for every 2 or 3 students|
|When the mixture looks like this, cover and store until needed.|