How about adding this to your classroom as an interactive maths display for practising ‘mean, median, mode and range’?
Easily changeable too with a bit of Velcro or blue tac!
I came across the idea here Better Bulletin Boards – which talks about it in more detail
If you’re interested in more interactive maths displays then you might like these…
If you have any suggestions or displays to share then feel free to email them to me via firstname.lastname@example.org