Fundamental Math Skill:
 Developing Mental Math Skills: Doing calculations in the mind, with little or no use of paper and pencil or calculator.
– Focusing on the Fundamentals of Math – A Teacher’s Guide, p.2
Video Selections
These curated videos have been selected to prompt further thinking about the selection from the Teachers Guide to the Fundamentals of Math posted above.
Thinking About Mental Math SkillsDocumenting Mental Math LearningUsing Spatial Reasoning To Support Mental MathModels That Support Developing Mental Math Skills
Using Friendly Numbers  Marion Small (1:23)
From "Thoughts on Teaching & Learning Mathematics: OAME 2015"
Strategies for Mental Calculation  Cathy Fosnot (2:46)
From "Building Success in Mathematics: A School’s Journey"
Using Mental Math in Proportional Reasoning (3:00)
From "Engaging Students in Mathematics  Getting Started"
Text Resources
This curated list of documents have been selected to help you gain a deeper understanding of the above selection from “Focusing on the Fundamentals of Math – A Teachers Guide”. Each link will take you directly to the relevant section within the document.
Asking Effective Questions – Capacity Building Series 

A Guide to Effective Instruction in Mathematics, K6, Number Sense and Numeration Vol 1, The Big Ideas 

Student Interactions in the Math Classroom: Stealing Ideas or Building Understanding – What Works 

The Mathematical Territory Between Direct Modelling and Proficiency, What Works 