{"type":"rich","version":"1.0","title":"补全三角恒等式","description":"学生将正确的三角函数或数值拖入空格，以完成基本三角恒等式","author_name":"Padlet TA","thumbnail_url":"https://arcade.padlet.com/open-graph/social-preview-image.png?timestamp=1768731615177&hashid=nlp8xLPPpX","html":"<iframe src=\"https://arcade.padlet.com/embed/nlp8xLPPpX\" width=\"720\" height=\"480\" frameborder=\"0\" allowfullscreen></iframe>","width":720,"height":480,"provider_name":"Padlet Arcade","provider_url":"https://arcade.padlet.com"}