Tower in the Kitchen

Sitting at the table with my girls I spontaneously started building a pyramid out of the three plastic cups in front of me.  When I saw the girls were interested I jumped up and grabbed the rest of the stack from the cupboard.  The girls had fun putting together a cup pyramid. 

Next they had to try the same thing with bowls.

Soon after the plates came out too

and towers were being built.

Such concentration.