Lesson 19

Situaciones y ecuaciones

Lesson Purpose

The purpose of this lesson is for students to represent and solve two-step word problems.

Lesson Narrative

In this lesson, students are able to apply what they have learned in this section to write equations that represent two-step word problems using a letter for the unknown quantity. They persevere to solve two-step word problems, and decide if their answer makes sense (MP1).

  • Engagement
  • MLR5

Learning Goals

Teacher Facing

  • Represent and solve two-step word problems using equations with a letter standing for the unknown quantity.

Student Facing

  • Representemos y resolvamos problemas.

Required Preparation

CCSS Standards


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

Who has been sharing their ideas in class lately? Make a note of students whose ideas have not been featured in class and look for an opportunity for them to share their thinking in tomorrow’s lesson.

Suggested Centers

  • Tic Tac Round (3–5), Stage 1: Nearest Ten or Hundred (Addressing)
  • Number Puzzles: Addition and Subtraction (1–4), Stage 5: Within 1,000 (Addressing)
  • Five in a Row: Multiplication (3–5), Stage 2: Factors 1–9 (Supporting)

Print Formatted Materials

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Student Task Statements pdf docx
Lesson Cover Page pdf docx
Cool Down Log In
Teacher Guide Log In
Teacher Presentation Materials pdf docx