[과학 교과 7대 안전] 손전등과 레이저
Synopsis
관련 단원 5학년 1학기 빛의 성질 *영상 내용 손전등과 레이저 사용 안전 수칙을 담은 영상입니다. * 과학교과 속 7대 안전 워크북 -5 ...
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