During Year 3, participants will continue to focus on a research-based, student-focused model of instruction. Participants will learn ways to increase students’ efficiency in mathematics in a manner that is consistent with their current levels of understanding. They will learn to recognize which student-generated strategies lay a foundation for work with larger numbers and learn how to encourage these strategies. Participants will be introduced to formal mathematical notation that students can use to represent their strategies. They will also see how to engage students during and after problem-solving in a manner that helps move students to more advanced mathematical understanding for computation and number facts.