Problem Solving

I am trying to facilitate more student problem solving in my classroom this year.  When students have questions, I respond with questions.  Instead of me giving answers, I ask them what they think.  I ask them what they have tried, have you looked for a similar example in your textbook or notes?  Have you asked another student in the class?  Their first response is frustration, but their understanding is much deeper when they discover the answer on their own.