软件类别：iOS软件\n\n,
软件授权：免费软件\n\n,
运行环境：iphone\n\n,
软件语言：英语
\n\n,Tidels.com presents this ebook for children world wide to memorize basic addition facts. Click on "Start Reading" to start reading the book. User can turn page by page by swiping the picture left or right.\n\n
下载地址：iTunes 或者AAP STORE 下载
