Lesson 15
Exploración de estimación
Lesson Purpose
The purpose of this lesson is for students to apply their understanding of multi-digit multiplication and the standard algorithm of multiplication to create an Estimation Exploration activity.
Lesson Narrative
This lesson offers teachers the opportunity to listen to ways in which students reason about multi-digit multiplication. After the warm-up, students create their own Estimation Exploration activity and then facilitate their Estimation Exploration with other students in the class. Students can draw pictures or find images to use for their Estimation Exploration from books or other sources as the teacher determines or use actual objects from around the classroom.
- Action and Expression
- MLR8
Learning Goals
Teacher Facing
- Fluently multiply multi-digit whole numbers using the standard algorithm.
Student Facing
- Creemos una actividad tipo “Exploración de estimación”.
Required Materials
Materials to Gather
Required Preparation
CCSS Standards
Addressing
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
Think about who volunteered to share their thinking with the class today. Are the same students always volunteering, while some students never offer to share? What can you do to help the class understand the value of hearing the ideas of every mathematician in the classroom?