{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Developing Essential Understanding of Addition and Subtraction for Teaching Mathematics in Pre-K-Grade 2","author_name":"Janet H. Caldwell, Karen Karp, Jennifer M. Bay-Williams","thumbnail_url":"https://www.ebooknetworking.net/books/087/353/big0873536649.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0873536649.html\">Developing Essential Understanding of Addition and Subtraction for Teaching Mathematics in Pre-K-Grade 2</a>","width":400,"height":300}