{"type":"rich","version":"1.0","title":"Torri'r Codau Rhif","description":"Gweithgaredd lle mae myfyrwyr yn adnabod patrymau rhifau a'u rheolau trwy lenwi rhifau coll mewn dilyniant 'cod cyfrinachol'.","author_name":"Padlet TA","thumbnail_url":"https://arcade.padlet.com/open-graph/social-preview-image.png?timestamp=1768648158500&hashid=Rej9PvBVrd","html":"<iframe src=\"https://arcade.padlet.com/embed/Rej9PvBVrd\" width=\"720\" height=\"480\" frameborder=\"0\" allowfullscreen></iframe>","width":720,"height":480,"provider_name":"Padlet Arcade","provider_url":"https://arcade.padlet.com"}