{"type":"rich","version":"1.0","title":"Addition and Subtraction Sort","description":"Players sort worked examples into three categories such as 'addition with regrouping,' 'subtraction with regrouping,' and 'no regrouping.' This helps students recognize the structure of multi-digit problems and decide which standard algorithm strategy is needed. (4.NBT.B.4)","author_name":"Padlet Arcade","thumbnail_url":"https://arcade.padlet.com/open-graph/social-preview-image.png?timestamp=1774337010573&hashid=aBKQ5nAGKZ","html":"<iframe src=\"https://arcade.padlet.com/embed/aBKQ5nAGKZ\" width=\"720\" height=\"480\" frameborder=\"0\" allowfullscreen></iframe>","width":720,"height":480,"provider_name":"Padlet Arcade","provider_url":"https://arcade.padlet.com"}