The work of this lesson connects to previous lessons in which students solved Compare, Difference Unknown story problems in a way that made sense to them. The context of data revisits previous work in Grade 1 and encourages students to consider more abstract contexts that involve comparison.

Students first interpret whether statements about data represented with discrete images are true. They then must answer “how many more?” and “how many fewer?” questions about data represented by numbers in a table.

Throughout the lesson, students continue to make sense of ways to represent the relationship between the bigger quantity, smaller quantity, and difference, including making sense of Compare problems as an unknown addend problem. When students connect the quantities in the story problem to an expression or equation, they reason abstractly and quantitatively (MP2).

Which math ideas from today's lesson did students grapple with most? Did this surprise you or was this what you expected?