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.
Cheers!
- Sarah and the [Math]odology Team

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Mathodology Roundtable - assessment and the role of novel problems
Sarah Schaefer & Dr. Yeap Ban Har
- 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.
Math Concepts
Part-Whole Relationships
Decomposing Numbers-Operations
Adding and Subtracting Large Numbers
Multiplying Two-Digit Numbers
Key Ideas -
Division
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?
Math Practices
Modifying an Anchor Task
Planning a
Lesson
Questioning
Techniques
Mathodology Monday
Building Thinking Classrooms
Sarah Schaefer and Dr. Peter Liljedahl
Building Thinking Classrooms-Questioning
Sarah Schaefer and Dr. Peter Liljedahl
Building Thinking Classrooms-Assessment
Sarah Schaefer and Dr. Peter Liljedahl
Building Thinking Classrooms
Classroom Setup