Constructing Knowledge

As part of my own personal development, I have been taking a class about getting students to construct their own knowledge. (It is quite difficult at a kindergarten level) I posed a problem: "I went to the candy store and wanted to buy 5 pieces of candy. The man at the candy shop told me, I can only buy 5 jolly ranchers or 5 tootsie rolls. I didn't have enough money to buy 10 pieces, and I wanted both. The students were to help me think of ways to buy 5 pieces of candy-some jolly ranchers and tootsie rolls." Many told me, they'd give me money so I could have both or told me I needed to work harder! (Though LOTS and LOTS of questioning we were finally able to come up with some ideas)