A Batman mystery based on telling time, adding and subtracting time, and other time based shenanigans. Differentiated..
This article on the mental floss website discusses the distance Super Mario had to walk to get to Princess Peach in the game called … Super Mario. Within the article are links to super mario maps, (also Zelda, GTA and Doom maps!!) and the maths to figure out the distance is pretty straight forward. You could easily pinch a few maps and do your own investigations into scale, distance etc with a very obvious narrative to engage students.
A collection of images taken from the real world that if studied closely, reveal the conversions between different measures.
This is a great website with thought provoking questions about estimation, with small clues to help students think mathematically and make more of an educated guess. It’s updated daily, so in theory you could use it for… every starter ever.