Timestable t-shirts

I use these to display on a washing line in my classroom to display (celebrate) and record when a child knows a times table off by heart.I use a hot seating activity and when the children have proved they know the table they can write their name or initial on the relevant t-shirt.Great form of recording assessment (and it looks nice too!) Aligned with Common Core State Standards: 3.OA.1, Operations and Algebraic Thinking.