# ALEX Learning Activity

## Dividing Large Numbers Part I: Number Talk

A Learning Activity is a strategy a teacher chooses to actively engage students in learning a concept or skill using a digital tool/resource.

This learning activity provided by:
 Author: Stephanie Carver System: Cullman City School: Cullman City Board Of Education
General Activity Information
 Activity ID: 2516 Title: Dividing Large Numbers Part I: Number Talk Digital Tool/Resource: Introduction to Division Journal Prompt Web Address – URL: http://docs.google.com/document/d/13ZnGZbUeKDbuXUlkQN8A8Up6aYXul6VytUbxNxGR19s/edit?usp=sharing Overview: This activity can be used as an introduction or engagement activity to a lesson on division with large numbers. Students will participate in a mathematical conversation that allows them to express their thinking on the relationship between multiplication and division. This activity results from the ALEX Resource Development Summit.
Associated Standards and Objectives
Content Standard(s):
 Mathematics MA2019 (2019) Grade: 4 12. Use strategies based on place value, properties of operations, and/or the relationship between multiplication and division to find whole-number quotients and remainders with one-digit divisors and up to four-digit dividends. a. Illustrate and/or explain quotients using equations, rectangular arrays, and/or area models.
Learning Objectives:

Students will find whole-number quotients and remainders by using strategies based on place value.

Students will discuss the relationship between multiplication and division.

Strategies, Preparations and Variations
 Phase: Before/Engage Activity: Number talks are short mathematical discussions between the student, teacher, and classmates about how to solve a carefully chosen mental math problem. The students share their mathematical reasoning as the teacher records their thinking visually on the board or chart paper. Lead the class in a mathematical discussion using a number talk.40 ÷ 416 ÷ 456 ÷ 4These mental math problems will allow students to build on multiples of ten and find easy ways to divide within the dividend. This will help direct the students' thinking to use the partial quotients division strategy using the relationship between multiplication and division. Allow the students to share their thinking and mathematical reasoning to solve the problems.Once students have had an opportunity to share their thinking using the number talk, allow students to answer the journal prompt to continue their mathematical reasoning on the relationship between multiplication and division. Assessment Strategies: Student discussions during the Number Talk and their responses on the journal prompt will be used as a formative assessment to identify if students can identify the relationship between multiplication and division and use it to find quotients of whole numbers. Advanced Preparation: Students should have basic knowledge of multiplication and division.Teachers should have access to a whiteboard or chart paper. Students will need math journals.For more information on number talks, check out the book Number Talks by Sherry Parrish. Variation Tips (optional): Notes or Recommendations (optional): 12. Use strategies based on place value, properties of operations, and/or the relationship between multiplication and division to find whole-number quotients and remainders with one-digit divisors and up to four-digit dividends. a. Illustrate and/or explain quotients using equations, rectangular arrays, and/or area models.  This activity can stand alone or be used with the following learning activities: Dividing Large Numbers Part II: School ConcertDividing Large Numbers Part III: Exit Pass
Keywords and Search Tags
 Keywords and Search Tags: division, multiplication, Number Talk, Sherry Parrish