The Glass Wall

Why Mathematics Can Seem Difficult

Error Patterns in Computation

Using Error Patterns to Help Each Student Learn

Writing in the Teaching and Learning of Mathematics
How Students (Mis-) Understand Science and Mathematics

Intuitive Rules

Where Mathematics Come From

How The Embodied Mind Brings Mathematics Into Being

How the Brain Learns Mathematics
Readings in Cooperative Learning for Undergraduate Mathematics
Learning to Teach and Teaching to Learn Mathematics

Resources for Professional Development