{"type":"rich","version":"1.0","description":"연필을 이용한 비표준 단위 길이 측정 및 분류 활동","title":"연필보다 길까, 짧을까?","width":720,"html":"<iframe src=\"https://arcade.padlet.com/embed/WvKPGQPApg\" width=\"720\" height=\"480\" frameborder=\"0\" allowfullscreen></iframe>","height":480,"provider_name":"Padlet Arcade","author_name":"Padlet TA","thumbnail_url":"https://arcade.padlet.com/open-graph/social-preview-image.png?timestamp=1767922010199&hashid=WvKPGQPApg","provider_url":"https://arcade.padlet.com"}