Encourage "math talk", critical thinking, and check for understanding with this graphic organizer using the Common Core math standard for 3rd grade, MCC3.NBT.2 (I can add within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.) Each section of the graphic organizer requires students to use multiple problem solving strategies, show and explain their understanding, use manipulatives, and write about their