The Mortensen Method is concept-based teaching. Jerry Mortensen was Montessori trained, so of course his methodology is based on Montessori principles and teaching.
You'll see PDFs and videos that help you get the concept across to your students or children.
Using concepts makes math fun and easy because once the child understands concepts all we can do is change the numbers.
The concept shown above for example is a simple concept but numbers are made up of other numbers, The child is building Addends past 10.
The lesson about the pyramid that contains Concrete Drawing and Symbol, isn't on the concepts page yet. It is on one of the videos in module to teacher training. There are other Videos and PDFs to help explain the topics below.
There are also links to pages of for further explanation.
The first thing you'll see when you click enter, is a box for you your password. Use the module three password.
Concepts covered on the page:
The Five Basic Concepts
Three Period Lesson
Start in the Concrete
Remove the "NO" from the lesson.
Stages To Mastery.
Place the student in a situation where they can not fail.
Economy of Symbol.
Control of Error
Early Exposure to Math Concepts Helps Ensure Success.