Clusters should not be sorted from Major to Supporting and then taught in that order. To do so would strip the coherence of the mathematical ideas and miss the opportunity to enhance the major work of the grade with the supporting clusters.
Students will be able to compare and solve equations using comparative relational thinking. This lesson only addresses addition, not the other operations. Solving these equations will require the students to mentally evaluate to determine if it is true or false. The students will also determine the unknown number in some equations.