Lesson 15

Estimation Exploration

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

  • Let’s create an Estimation Exploration.

Required Materials

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

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?

Print Formatted Materials

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Additional Resources

Google Slides

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PowerPoint Slides

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