7 train cars

This Application Problem is a part of the Lesson 14, Unit 4, Grade K. Decomposition and composition of the number 7 serves as an anticipatory set for today's lesson. In this lesson, students represent addition story problems to 7, involving decomposition and composition, modeling with A + B = C and C = A + B. This work is based on an original work of Great Minds and licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.