Final answer:
The professor's approach is ineffective and demotivating. Communication and support are needed to address the issue.
Step-by-step explanation:
The professor's approach in the scenario is ineffective and detrimental to the students' learning. By insulting their abilities and giving them no further guidance, the professor creates a hostile and demotivating environment. To resolve the issue, communication and support are key. The professor should provide constructive feedback, offer resources and guidance, and work with the students to help them improve.