Concrete Representational Abstract (CRA) in mathematics

In response to a Twitter inquiry, I decided to write up some longstanding thoughts on the Concrete Representational Abstract (CRA) sequence that is popular particularly in designing instruction for learners with disabilities. First, what is CRA? Here, from a researcher who done several studies on CRA with students with disabilities in mathematics: (more…)

Designing intervention in operations

In Models of Intervention in Mathematics, edited by Cathy Fosnot and published by NCTM in 2010, Susan Jo Russell wrote a piece called “The habit of reasoning: Uncovering competence through focused instruction.” I love this piece because it gives a structure to how teachers can plan intervention with kids that builds on strengths. (more…)