We rolled out clay slabs and sliced them into about 8 x 8" inch squares, 1/4-1/2" thick or so.
Using various tools the students experimented with making different textures and patterns. Some of the tools included forks, popsicle sticks, empty glue sticks, toothbrushes....
Then each student cut four slices diagonally from the corners.
We discussed slip or scoring- or "scratching and attaching"- or as I like to call it "clay velcro". I call it this because I explain how two edges need to have rough texture in order to adhere to each other strongly. They always get it after that.
We attached the corner slices together and turned the 2-D forms into 3-D forms.
These were fired and glazed. They make great candy dishes!