Here are three key takeaways I gathered from today's discussion: 1. When designing lessons and units, it is important to ensure they incorporate "worthwhile mathematical tasks" as defined by Stein and Smith. These tasks revolve around interesting problems, require examination and perseverance, build understanding through clear learning expectations, and allow for reflection. 2. Both lessons and units should be evaluated against the demands of the Common Core State Standards to ensure they are adequately addressing the targeted content. Key elements to examine include the standards addressed, essential questions, and embedded assessments. 3. Professional learning communities can improve student achievement through high-leverage actions like collaboratively examining student work, promoting consistency in evaluation, and reflecting on instructional