We had an email from Hannah who made an observation to make: "I noticed that in the February Bernard's Bag question, all the pairs of two (apart from 5 and 10) numbers that add up to make 10 have the same pattern as each other. If you tried this with twelve it wouldn't work because the line wouldn't go anywhere. Where I come from we call a 12-sided shape a dodecahedron." If you have investigated other things then do get in touch. Please don't worry that your solution is not "complete" - we'd like to hear about anything you have tried. Teachers - you might like to send in a summary of your children's work.