The purpose of this activity is to reintroduce students to Put Together/Take Apart, Total Unknown story problems. In this type of problem, there is no action, so students need to recognize that the addends must be joined to make up the total. Students were introduced to this type of story problem in kindergarten and solved within 10 using objects or drawings. Students also solved Put Together, Total Unknown problems in Unit 1 in the context of data.
Students begin the activity by looking at the problem displayed, rather than in their books. The Three Reads routine gives students an opportunity to make sense of the problem before looking for a solution. Because there is no action in a Put Together problem, students identify the important quantities and think about how they might represent them before they solve the problem (MP1). At the end of the Launch, students open their books and work on the problem. Students solve in any way they choose, including using objects, drawings, words, or numbers.
This activity uses MLR6 Three Reads. Advances: reading, listening, representing.