What should a teacher do when many students do not understand a math concept?

When many students do not understand a math concept, it is crucial for the teacher to address the misunderstanding directly and effectively. Reviewing the first two problems with the entire class allows the teacher to clarify key concepts, demonstrate problem-solving techniques, and provide immediate feedback. This approach not only reinforces the material but also encourages student engagement and participation. By working through the examples together, the teacher can identify specific areas of confusion, adjust their instruction accordingly, and promote a deeper understanding among all students. This method fosters an inclusive learning environment where students feel supported and are more likely to ask questions or express their difficulties, leading to improved learning outcomes.