One of the goals of good instruction is for students to reveal what they know and what they need. The structure of MTB4 gives students opportunities to own their learning and for teachers to observe students’ learning, understanding, and misconceptions. Math Trailblazers provides students with the time and opportunities to study mathematics in a powerful way. Students invent strategies, build on what they know, and figure out what makes sense. At the same time, the program guides teachers in what to look for as students work. Other highly scaffolded curricula with step-by-step procedures do not permit students ownership of their learning nor do they allow a teacher to see what students really understand. Math Trailblazers thoughtfully considers what type of scaffolding students really need and spends more time and attention on that and less on following a step-by-step, one-size-fits-all procedure.