{"type":"rich","version":"1.0","description":"Understand the imaginary unit i, compute i², and identify complex numbers in standard form a + bi. (HSN.CN.A.1)","title":"Complex Numbers Challenge","width":720,"html":"<iframe src=\"https://arcade.padlet.com/embed/nwrW5Jx8pl\" 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=1785282864600&hashid=nwrW5Jx8pl","provider_url":"https://arcade.padlet.com"}