A video-study 30 of classroom management in Year 8 mathematics has shown that teachers spend less lesson time on new content and put less emphasis on reasoning and problem solving. Compared to international best practice, Indonesian teachers should: (a) apply better time management and use time more effectively to teach relevant content; (b) put more emphasis on higher order thinking in instructional delivery; (c) apply content overlap to what is taught and what is tested; (d) apply the proper level of content coverage to ensure the level and amount of content covered is equal to the level and amount understood by the student; and (e) create an environment of enjoyable learning to maintain student engagement, involvement and attention.