This resource is a remix from Illustrative Mathematics.This encourages student collaboration and allows students to have a mathematical dialogue to express their understanding of algebraic properties. This resource is a valuable part of building background when introducing units of measure or equations in the early elementary years of mathematics education as it provides students a concrete example of building an equation with concrete objects.   Suggested Modification- Encourage student online portfolio - A student recording sheet with dominos illustrations can be used as a reference for students to have a mathematical dialogue. Teachers can use online educational platforms that would allow students to record their own understanding of math and share them with the teacher. For example, Seasaw is an educational platform that students can use, but will require parental permission. It allows collaboration between teachers, students, and the parent community where students can have a voice and choice in their learning.