Dr. David Costello
A leading math author and educator, Dr. David Costello is the developmental editor of this innovative resource. David has supported teachers as a numeracy interventionist, coach, and curriculum consultant. A popular speaker, David's expertise includes mathematics, differentiation, and literacy.
A leading math author and educator, Dr. David Costello is the developmental editor of this innovative resource. David has supported teachers as a numeracy interventionist, coach, and curriculum consultant. A popular speaker, David's expertise includes mathematics, differentiation, and literacy. See less
Dr. David Costello's Featured Books