This method requires control of the process in order to gain objectivity. I don't believe in this approach in its purest sense. It is always good to have structure, but not a stifling environment. Growth sometimes requires more then just confirming for refuting a stance. Keep inquiry moving by experimenting.
Uncertainty abounds in a school.
Use exploratory experimentation to get a feel for a reaction. I love this term. I think I do this intuitively. Remember the moving target and be willing to give it time as you experiment in the three phases. This method requires control of the process in order to gain objectivity.