## Reflection: Modeling Part-Part-Whole Addition - Section 1: Warm-Up

My students have really struggled with problems where the sum, or total, is known and 1 part of the problem is known (change unknown). I wanted to give them a visual problem solving strategy that might help them "see" the missing piece that the problem is asking for.

Because not all students learn in the same way, I make sure that I present another strategy, in addition to the ways we have previously covered. This part/part/whole model seemed to really help my struggling as well as my ELL students, who often rely heavily on picture models.

Showing it another way
Modeling: Showing It Another Way

Lesson 1 of 5

## Big Idea: Students can break apart problems into picture models that aid in solving.

Print Lesson
Standards:
Subject(s):
40 minutes

### Sarah Maffei

##### Similar Lessons

###### Mental Math with Place Value
3rd Grade Math » Place Value
Big Idea: It is imperative that students have a strong understanding of place value in order to complete and communicate any given math task. This lesson invites them to re-explore strategies they have created prior to teaching standard algorithms.
Favorites(17)
Resources(14)
Troy, MI
Environment: Suburban

###### Initial Informal Assessments
3rd Grade Math » 1st Week: Getting to Know Each Other Through Graphs
Big Idea: Get to know your students' learning personalities as you observe them on this informal assessment.
Favorites(16)
Resources(12)
Tucson, AZ
Environment: Urban

###### Multi-Digit Subtraction
5th Grade Math » Targeted Skills Interventions
Big Idea: Beg, borrow, steal? I think borrowing is best!
Favorites(8)
Resources(9)
Grand Rapids, MI
Environment: Urban