Each card has a question in blue, on the reverse of the sheet there are hints on how to structure an answer, with extra information if needed. The back also has a functional extension in orange, and an extension in pink. I made this with the objective of encouraging more independent and collaborative work in the classroom. The reasoning slide made a good plenary discussion at the end of the lesson.

A very simple tarsia jigsaw using only positive numbers use a = 3, b = 5 and c = 2 to complete the puzzle by substituting into simple expressions