{"type":"rich","version":"1.0","description":"文字式の表し方","title":"文字と式の基本","width":720,"html":"<iframe src=\"https://arcade.padlet.com/embed/AXpGEwoArw\" 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=1783992913154&hashid=AXpGEwoArw&key=social-preview-image-v4","provider_url":"https://arcade.padlet.com"}