This document provides a lesson plan for a 1st grade math class. The objectives are for students to sort dominoes by their total and write number models. Students will play a parking lot game using dominoes to fill number spots from 0-12, and write addition number models for each. Procedures include introducing the game, having students play in groups while the recorder writes number models, and reviewing as a class. Student understanding will be evaluated through class discussion and completed number model sheets.