![Math Ed Podcast show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/062/351/small/math-ed-podcast.jpg)
Summary: David Purpura from Purdue University discusses the article, "Informal numeracy skills: The structure and relations among numbering, relations, and arithmetic operations in preschool," from the American Educational Research Journal, Volume 50. (Co-author: Christopher Lonigan) link to article David's Professional Website See the comments for references mentioned in the interview.