Kids love secret codes and messages. Play our Semaphore alphabet slideshow on your computer screen or white board to help them learn the rather complicated signalling - and then maybe the kids can have a go themselves using real flags?
Semaphore Alphabet Slideshow
This coded message uses a simple letter transposition code to hide a message for St Patrick's Day. Can the kids work it out?
Crack the code to work out what Oliver has asked Santa to bring him this Christmas. We haven't provided any clues at all, so children will need to think about how they might write a letter to Santa to get them started.