{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Ages and Timelines: Subtraction on the Open Number Line (Contexts for Learning Mathematics, Grades K-3: Investigating Number Sense, Addition, and Subtraction)","author_name":"Catherine Twomey Fosnot","thumbnail_url":"https://www.ebooknetworking.net/books/032/501/big0325010145.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0325010145.html\">Ages and Timelines: Subtraction on the Open Number Line (Contexts for Learning Mathematics, Grades K-3: Investigating Number Sense, Addition, and Subtraction)</a>","width":400,"height":300}