Ben exclaims: "I think I'm done."
I ask: "Pretend to go up the stairs to get into your house."
Ben realizes: "They'll fall down into the house."
I ask: "What can you do to solve that problem?"
Be realizes: "I could make a slide to slide into the house."
I wonder: "That's one way to solve the problem, but then you don't really need stairs. You could have the door down on the floor."
Ben's walls keep falling down. Isabel suggests: "Ben, turn the blocks flat. It's stronger."
He turns the blocks comprising the wall on their wider side.
I wonder: "You had a few problems building that house. What did you learn when you solved those problems?"
Ben replies: "You have to make the walls strong so they don't fall over. You put them on the wide side. You have to make the floor higher, so its at the top of the stairs."
