Lesson 12
Resolvamos problemas en los que hay multiplicaciones
Lesson Purpose
The purpose of this lesson is for students to solve contextual problems that involve multiplication of a single-digit number and a whole number of up to four digits, or multiplication of 2 two-digit numbers.
Lesson Narrative
This lesson gives students the opportunity to apply the multiplication strategies they have learned to solve various contextual problems involving measurement. The problems vary in format and complexity—some involve a single computation and others require multiple steps to solve. The work here prompts students to make sense of problems and persevere in solving them (MP1) and to reason quantitatively and abstractly (MP2).
- Action and Expression
Learning Goals
Teacher Facing
- Multiply multi-digit numbers using strategies based on place value and the properties of operations.
Student Facing
- Resolvamos problemas usando lo que hemos aprendido sobre la multiplicación de números enteros.
Required Materials
Materials to Gather
Required Preparation
Lesson Timeline
| Warm-up | 10 min |
| Activity 1 | 25 min |
| Activity 2 | 10 min |
| Lesson Synthesis | 10 min |
| Cool-down | 5 min |
Teacher Reflection Questions
As students shared their ideas today, how did you ensure all students’ voices were heard and valued as an important part of the collective learning?
Suggested Centers
- Five in a Row: Multiplication (3–5), Stage 3: Two-digit Factors (Addressing)
- Compare (1–5), Stage 3: Multiply within 100 (Supporting)