{"type":"rich","version":"1.0","title":"Missing Number Mysteries","description":"Players fill in missing numbers in equations and number sentences, such as 46 + __ = 70 or 83 - __ = 41, using a word bank of possible answers. The activity strengthens fluency and understanding of how addition and subtraction are related. (2.NBT.B.5)","author_name":"Padlet Arcade","thumbnail_url":"https://arcade.padlet.com/open-graph/social-preview-image.png?timestamp=1774334857934&hashid=WNp2lnbgrx","html":"<iframe src=\"https://arcade.padlet.com/embed/WNp2lnbgrx\" width=\"720\" height=\"480\" frameborder=\"0\" allowfullscreen></iframe>","width":720,"height":480,"provider_name":"Padlet Arcade","provider_url":"https://arcade.padlet.com"}