{"type":"rich","version":"1.0","description":"빛이 지나가는 물질과 빛을 막는 물질 분류하기","title":"빛이 지나는 물질","width":720,"html":"<iframe src=\"https://arcade.padlet.com/embed/exjLAog7pO\" width=\"720\" height=\"480\" frameborder=\"0\" allowfullscreen></iframe>","height":480,"provider_name":"Padlet Arcade","author_name":"Padlet Arcade","thumbnail_url":"https://arcade.padlet.com/open-graph/social-preview-image.png?timestamp=1786383617168&hashid=exjLAog7pO","provider_url":"https://arcade.padlet.com"}