How do you solve a problem like transition?

Help A Child Transition Between Activities

This morning, Little Bear was playing with his trains when I asked him to have breakfast. “No, I play train track,” he replied, not even looking up. “First you have breakfast and then you can play with the train track,” I said. “Nooooooooo,” he wailed, stamping his feet on the ground. A full-blown meltdown ensued,