When children produce this type of thinking, I like to call it that, we can't help but marvel at the complexity.
Here are some considerations. What is the role of the teacher during this process? Should she sit by and observe, taking notes or should she be asking questions? Does the process of asking questions while the child works, change the outcome and does the questioning distract the child?
Should she wait until the child is finished to ask questions?
What questions or comments should the teacher ask or make? Will her line of questions redirect the child's thinking?
There is much to consider when we engage with children.
Knowing "when" is the key.