App Description
引导孩子通过操作活动，探索原数添上1，形成的新数三者之间的关系。如“5个圆片添上1个是6个，6个圆片添上1个是7个”。
iPhone Screenshots
(click to enlarge)
App Changes
- October 17, 2016 Initial release
Other Apps From Shenzhen YouBei Topsky education Technology Co.,Ltd
