# Lesson 13

Comparemos datos sobre nuestros materiales de arte favoritos

### Lesson Purpose

The purpose of this lesson is for students to solve Compare, Difference Unknown story problems in a data context.

### Lesson Narrative

The work of this lesson connects to previous lessons in which students solved Compare, Difference Unknown story problems in a way that makes sense to them. The context is data to revisit previous work in Grade 1 and encourage students to consider more abstract contexts. Students write an equation to match the problem and put a box around the answer to the question, building on their work in previous sections. Students consider addition and subtraction equations that relate to a given problem. When students connect the quantities in the story problem to an equation, they reason abstractly and quantitatively (MP2).

• Engagement
• MLR8

### Learning Goals

Teacher Facing

• Solve Compare, Difference Unknown story problems through a data context.
• Write an equation to represent the story problem.

### Student Facing

• Comparemos datos.

### Lesson Timeline

 Warm-up 10 min Activity 1 20 min Activity 2 15 min Lesson Synthesis 10 min Cool-down 5 min

### Teacher Reflection Questions

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