watermark logo
讓孩子的眼睛躍過圍墻!

Up next


trim.4AA4E968-DD6E-402F-B5B6-B77AACBA2E9B.MOV

26 Views
杨济遥 12
6
Published on 26 Dec 2019 / In Education environment

轻与重

Show more
1 Comments sort Sort By

Hello
Hello 6 years ago

轻和重是一组常见的比较概念,利用天平进行比较是最直接的表达方式。在家里可以制作简易天平让孩子进行操作演示!

   0    0
Show more
Facebook Comments

Up next