{"type":"rich","version":"1.0","title":"画材を分類しよう","description":"画材（水彩、油彩、木炭）の見た目に基づいてアート作品を分類する活動","author_name":"Padlet TA","thumbnail_url":"https://arcade.padlet.com/open-graph/social-preview-image.png?timestamp=1767922011038&hashid=bajyVV75pN","html":"<iframe src=\"https://arcade.padlet.com/embed/bajyVV75pN\" width=\"720\" height=\"480\" frameborder=\"0\" allowfullscreen></iframe>","width":720,"height":480,"provider_name":"Padlet Arcade","provider_url":"https://arcade.padlet.com"}