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Overview:
This is a modification of the Illustrative Math lesson, Fact Families, https://www.illustrativemathematics.org/content-standards/tasks/1214. This lesson was used with a tier 3 fourth grade intervention math group to help students understand inverse relationships with addition and subtraction. I modified it to meet the students' needs by using just page four of the Triangle Worksheet attached resource from the Fact Families Illustrative Math lesson. I used only this page because I wanted students to understand the 8 related equations of fact families. I also modified this lesson by using fact families of 20 instead of 10 and students used a 20 bead Rekenrek to model the equations. A common misconception my students had was with the subtraction equations; they often would subtract the minuend from subtrahend instead of vice versa.
Subject:
Mathematics
Level:
Lower Primary
Grades:
Grade 1
Material Type:
Learning Task
Author:
Date Added:
08/02/2019
License:
Creative Commons Attribution Share Alike Creative Commons Attribution Share Alike
Language:
English
Media Format:
Downloadable docs, Text/HTML

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