건전지 다 쓴거야? 남은거야? by 송지연 https://padlet.com/20141617/q8jiy9eopjdl 다 쓴 건전지를 구분해낼 수 있는 방법이 어떤 것이 있을까요? en-us 2017-03-31 07:47:18 UTC 2023-01-25 00:30:06 UTC hello@padlet.com 알루미늄으로 실험할 수 있을까? 20141617 https://padlet.com/20141617/q8jiy9eopjdl/wish/163895728 2017-03-31 07:49:17 UTC https://padlet.com/20141617/q8jiy9eopjdl/wish/163895728 일반적으로 생활의 지혜처럼 쓰이는 방법이 있을까? 20141617 https://padlet.com/20141617/q8jiy9eopjdl/wish/163895796  ]]> 2017-03-31 07:49:43 UTC https://padlet.com/20141617/q8jiy9eopjdl/wish/163895796 토의법 예시 20141617 https://padlet.com/20141617/q8jiy9eopjdl/wish/165048283 2017-04-06 06:12:03 UTC https://padlet.com/20141617/q8jiy9eopjdl/wish/165048283