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 - assessment and the role of novel problems

Sarah Schaefer & Dr. Yeap Ban Har  
Ever have the thought "My child said they didn't learn this, why is this on the test?" or "We didn't teach this, why is it on the test?" In our Roundtable with Dr Yeap Ban Har, we learned that these novel problems are actually rich opportunities for learning and mathematical development.
Amongst other things, Ban Har shared three ways in which we can help prepare our students for novel problem solving:
  • Mindset: Foster a mindset that helps students know that sometimes we get it, and some days we just don't, but that it's always important to try.
  • Ability: Give students the opportunity to solve unfamiliar problems. Build mathematical skills beyond calculation. If students have more opportunities to develop the skills of visualization, seeing patterns, communication, metacognition, and number sense, then they will have the ability to attempt more unfamiliar problems.
  • Reflection: Reflection has the power to help us grow in understanding to approach learning and problem solving more confidently.
We're always grateful for the understanding we gain from Dr Yeap Ban Har.
Check out more from Ban Har on Facebook!

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​