For instance, across OECD countries, eight out of ten students report that their teachers tell them what they have to learn in every lesson, and seven out of ten students have teachers who ask questions in every lesson to check that students understand what they are learning. However, according to students, this practice is used only occasionally, as fewer than one in three students in OECD countries report that their teachers use this practice frequently in their lessons. Figure 3.4 shows the reported frequency of both teacher-directed and student-oriented instructional strategies for mathematics.