{"type":"rich","version":"1.0","title":"Expression Structure Sort","description":"Activity where students sort algebraic expressions into categories like common factor, difference of squares, and perfect-square trinomial to understand expression structure (HSA.SSE.A.2).","author_name":"Padlet Arcade","thumbnail_url":"https://arcade.padlet.com/open-graph/social-preview-image.png?timestamp=1774342374310&hashid=9Ljk5gVXKO","html":"<iframe src=\"https://arcade.padlet.com/embed/9Ljk5gVXKO\" width=\"720\" height=\"480\" frameborder=\"0\" allowfullscreen></iframe>","width":720,"height":480,"provider_name":"Padlet Arcade","provider_url":"https://arcade.padlet.com"}