ADDITION &
SUBTRACTION SUPPORT
Practical strategies, visual models, videos, and classroom resources to help students build deep understanding—not just memorize procedures.
Regrouping & Ungrouping Mats
Help students visualize regrouping, ungrouping, place value, and proof pictures using the same models used throughout Math Expressions.
Watch These Free Strategy Trainings
Addition Strategies in Math Expressions
learn:
- Standard vs shortcut algorithms
- Place value models
- Building confidence through visual understanding
SUBTRACTION STRATEGIES IN MATH EXPRESSIONS
learn:
- Missing partners
- Proof pictures
- Ungrouping explained
- Mental math and fractions connections
Subtraction with ungrouping
learn:
- Why students struggle
- How to teach ungrouping visually
- Common misconceptions
3 Strategies for teaching 3-digit addition
learn:
- Multiple methods
- Place value reasoning
- Building conceptual understanding
Addition & Subtraction Support
Addition Strategies
Explore strategies, models, and lessons to build strong addition understanding.
Subtraction Strategies
Help students understand subtraction with models, strategies, and practice.
Models & Workmats
Base ten blocks, number lines, workmats, and more hands-on tools.
Fact Fluency Practice
Build speed and confidence with engaging fluency activities and games.
Ready-to-Use Classroom Resources
Need classroom-ready materials? These resources are aligned to Math Expressions and designed to save you planning time.
Addition & Subtraction Stations
Fact Fluency Bundle
Addition & Subtraction Within 10 Bundle
Comparison Bar & Math Mountain Templates
Want Everything in One Place?
The Math Genius Squad gives you lesson-by-lesson support!
Lesson slides aligned to the Math Expressions lessons
Lesson videos and teaching walkthroughs
Scaffolds and intervention strategies
Fact fluency games & practice resources
Assessments & tools to track understanding
Related Support
Math Expressions Hub
Explore the full curriculum, units, and teacher support.
Student Support Hub
Find strategies and tools for supporting students.
Fact Fluency Hub
Build fluency and automaticity with systematic practice.
Problem Solving Hub
Support deeper thinking and real-world problem solving.
HI, I'm SHANNON!
I'm a former full-time teacher, curriculum developer, and math education specialist. I'm passionate about creating resources that make teaching math clearer and easier.
Regrouping & Ungrouping Mats
These helpful mats and posters guide students as they work on ungrouping and regrouping! How-to videos are also included covering the following topics:
Subtraction with Decimals
Adding and Subtracting Whole Numbers
Adding & Subtracting Mixed Numbers with Like Denominators
Race to 120 - Game
Race to 120 - Video
Ungrouping & Regrouping Whole Numbers with a Workmat - Video
Subtraction with Ungrouping - Video
3 Strategies for Teaching 3-Digit Addition - Video
Join the Math Genius Squad!
An all inclusive professional development membership for users of the Math Expressions curriculum. The squad is complete with addition & subtraction guidance and low prep resources.
Addition & Subtraction Stations for Every Unit
Student Accountability & Recording Pages
Organizational Tips & Resources
Additional Video & Training Support
As a Founder, Speaker, Author, and Teacher, I specialize in Math Expressions and have a passion for helping teachers implement it effectively—and enjoy the process along the way.
With over 20 years of experience teaching and training across the country, I’ve worked in classrooms of all grade levels and abilities. My journey has taken me from the classroom to roles as a math specialist, coach, and consultant, collaborating with schools and educators to create meaningful math experiences.
I’ve had the privilege of working closely with the author of Math Expressions, contributing to tools and resources that empower teachers and students alike. Whether developing curriculum, leading professional development, or speaking at events, my goal is always the same: to help transform math classrooms, one teacher and student at a time.
I know how it feels to struggle with math. I didn’t grow up loving it or believing I could succeed, but I discovered a love for math and grew confident in my abilities—not just as a mathematician but as a teacher. That transformation drives my mission today.
Somewhere along the way, I fell in love with math, and now I’m here to help bring that same joy and confidence to you and your students.
Join me inside the Math Genius Squad or at a training session, and let’s discover how far you and your students can GROW! Together, we can create math classrooms where both teachers and students thrive.
If you are looking for support and professional development with the Math Expressions curriculum,
I can help!
