This course provides an opportunity for classroom teachers of students in Grades 3-5 to learn strategies and acquire tools to advance students' mathematical reasoning. Aligned to research-based teaching practices and KAS, topics will include addition, subtraction and place value; the use of instructional routines including number talks; and the use of manipulatives, visual models and number lines. Participants will receive books, activities and instructional materials including a classroom number line. Participants will be expected to attend all 3 days of the course.