This document provides an overview and agenda for a 2nd grade math expressions unit covering tools, strategies, routines, assessments, and pacing. It includes details on using the 120 poster, money flip chart, number path, and secret code cards for daily routines. It outlines the key ideas, teaching strategies, tools, and non-essential lessons for each unit 1-9. The goals are to explore addition and subtraction concepts, understand place value, add and subtract multi-digit numbers, and work with time, money, and data. Computational fluency is emphasized through daily quick practice activities.