Free Videos

So if you’re here it’s probably because you’re as excited about helping your children with math as we are.

Try exploring these free videos to give you a greater sense of what’s possible. Click each video and explore the power of decomposing numbers or how bar modeling can develop into one of your most powerful tools for solving word problems.

We hope this is helpful and would appreciate your feedback and questions.


                                                                                                                                                               - Sarah and the [Math]odology Team

Want to stay updated with [Math]odology?

Sign up for our newsletter!

Monthly Showcase Videos


Video Poster Image

Mathodology Roundtable - Geometry In The Early Elementary Classroom
Dr.Yeap Ban Har & Sarah Schaefer  

This month we were joined by Dr. Yeap Ban Har, who shared some of the most insightful essentials to the skill of bar modeling in the math classroom.

Essential #1: Bar models are a method to model the world around us. Students begin by using actual objects, to drawing objects, to using concrete materials, and finally, drawing bars unit by unit, and eventually larger rectangles to represent amounts.

Essential #2: Bar modeling builds proficiency in using visualization to approach novel type situations in problem-solving.

Essential #3: The goal isn't the solution. Help students build the skill of metacognition in problem-solving. Use questions like "Does your diagram tell the story? Can we calculate anything? Do you need to make any adjustments?" By asking these questions, we are putting the work load on students to make decisions, instead of making decisions for them.

You can view how others solved the last novel problem shared in the session by going to

Resources mentioned in this session:

Teaching to Mastery Mathematics Bar Modeling: A Problem-solving Tool by Yeap Ban Har 

Singapore Model Method for Learning Mathematics


Join us Monday, March 4th

7pm EST

With Dr. Nicki Newton and Sarah Schaefer,

to learn more about

Accelerating math for learning recovery.


Registration available now!  

Click here to register for the upcoming Roundtable

Math Concepts


Part-Whole Relationships

Decomposing Numbers-Operations

Adding and Subtracting Large Numbers

Multiplying Two-Digit Numbers










Key Ideas -

Beginning Bar Modeling

Bar Modeling Across Middle Elementary




Social Media Q/A

Instagram Post March 2023

Just curious, how would you solve the first one if a child has not started algebra as yet? That's the only method coming to mind. How else can I facilitate this?


Video Poster Image
Video Poster Image
Video Poster Image
Video Poster Image

Math Practices​


Modifying an Anchor Task

Planning a



Mathodology Monday​

Building Thinking Classrooms

Sarah Schaefer and Dr. Peter Liljedahl​


Building Thinking Classrooms-Questioning

Sarah Schaefer and Dr. Peter Liljedahl ​

Video Poster Image


Building Thinking Classrooms-Assessment

Sarah Schaefer and Dr. Peter Liljedahl​

Video Poster Image

Building Thinking Classrooms

Classroom Setup

[Math]odology Favorites - Education​

Video Poster Image
Video Poster Image
Video Poster Image
How you can be good at math, and other surprising facts about learning
| Jo Boaler | TEDxStanford​
Five Principles of Extraordinary Math Teaching
| Dan Finkel | TEDxRainier​
Assessment: The Silent Killer of Learning
|Eric Mazur ​
Video Poster Image
Video Poster Image
Video Poster Image
Every kid needs a champion
| Rita Pierson​
The Power of Belief - Mindset and Success
|Eduardo Briceno​
Ability Grouping
|Professor John Hattie​

[Math]odology Favorites - Inspirational​


Video Poster Image
Video Poster Image
Kodi Lee: Blind Autistic Singer WOWS And Gets GOLDEN BUZZER!
|America's Got Talent 2019​
Gary Woodland surprises Amy from Special Olympics Arizona 2019​

In the Media - About Singapore Math​


Video Poster Image
Video Poster Image
Video Poster Image
Video Poster Image
Jade Educations​
Dan Rather- Take a Lesson from Singapore​