How should Mr. Barrios adjust his teaching after all students get the multiplication problem correct on an exit slip?

Choosing to teach more advanced multiplication content is appropriate when all students have demonstrated mastery of the current material, as indicated by their exit slips. This suggests that they have successfully grasped the basic concepts, allowing Mr. Barrios to challenge them further with more complex multiplication topics. Introducing advanced material can help maintain student engagement, stimulate higher-order thinking, and promote continuous growth in their mathematical skills.

In this context, if Mr. Barrios were to continue with the current lesson plan, it might lead to disengagement among students who have already mastered the material. Reducing homework assignments could potentially decrease practice opportunities for students who may still need reinforcement. Reviewing the current multiplication lesson may be beneficial for students who are struggling, but given that all students achieved success, it would not be the most effective use of instructional time. Thus, introducing more advanced content is a proactive approach that aligns with the demonstrated readiness of the entire class.