Math Group 4 (Lesson 4.2): Subtraction Board 2 (Essential Combinations)

Time Codes
0:00 Materials and Resources
1:27 Isolating the Minuend
2:07 Building Essential Combinations
3:22 Subtraction Equations
4:59 Control of Error
6:19 Theory
7:08 Like, Share, Comment, Subscribe

MONTESSORI PRINT SHOP AFFILIATE LINKS

Free Graph Paper Template:
https://www.montessoriprintshopusa.com/collections/free-downloads/products/graph-paper-half-inch?ref=base10montessori

Subtraction Board, Charts, and Instructions $5
https://www.montessoriprintshopusa.com/products/subtraction-strip-board-charts?ref=base10montessori

Subtraction Board Booklet $3
https://www.montessoriprintshopusa.com/products/math-booklets-sequential-order?ref=base10montessori

AMAZON AFFILIATE LINKS
Here is my Affiliate Link, but please note I have not used these specific products and cannot verify their quality. These are simply my suggestions based on searching for what I think would work best from Amazon:

Addition and Subtraction Boards: (Khgios Version) https://amzn.to/4kFr7gk

LOCALS RESOURCES
Locals Link to Math Group 4 Study Guide: https://basetenmontessori.locals.com/post/7096104/math-group-4-study-guide-for-locals-supporters

Locals Link to Math Sequence Chart for All Primary Montessori Lessons: https://basetenmontessori.locals.com/post/5600404/post-from-yt-community-page

Locals Link to Subtraction Diagram for Presentation 2:

MATH GROUP 4 PLAYLIST
https://youtube.com/playlist?list=PLHhQbUZUu60kNVUPNRS8GqN9rSCuzBXjZ&si=ExicHgIHQJ7BAlaH