watermark logo

VID_20191119_210120.mp4

12 Views
kangxiaoyan
3
Published on 19 Nov 2019 / In Education environment

10的分解与组合1

Show more
1 Comments sort Sort By

刘 老师
刘 老师 6 years ago

棒棒的,能够准确的用物体来表示数字10,赞!

   0    0
Show more
Facebook Comments