ボタンを押すことと，集合を現す範囲が色で示されることをわからせる．
- Resource Type
-
Activity
- Tags
-
- Target Group (Age)
- 11 – 14
- Language
- Japanese / 日本語
Error
A timeout occurred. Trying to re-save …
Sorry, but the server is not responding. Please wait a few minutes and then try to save again.
