Lesson objective: Understand that bivariate categorical data can be displayed in a two-way table.

Students bring prior knowledge of organizing data into categories from 1.MD.C.4. This prior knowledge is extended to bivariate categorical data as students create two-way tables. A conceptual challenge students may encounter is how to separate the categories and consolidate them into one table.

The concept is developed through work with two-way table, which helps students to organize bivariate categorical data into appropriate categories.

This work helps students deepen their understanding of operations because two-way tables can be thought of as representations of data values in categories and their sums.

Students engage in Mathematical Practice 5 (Use appropriate tools strategically) as they create a two-way table to help organize a teacher's data about what type of food should be used for a class fundraiser.

**Key vocabulary:**

- bivariate
- categorical data
- frequency
- two-way table