The document discusses the flipped classroom model of instruction. In a flipped classroom, students learn content from online lectures and videos at home, then complete homework and problem-solving activities in the classroom with guidance from the teacher. This reverses the traditional model where lectures are given in class and homework is done at home. Flipped classrooms allow more class time for student-centered activities, differentiated instruction, and developing higher-order thinking skills through collaboration and problem-solving. Teachers guide students as they apply what they learned from the online content during in-class activities.