Beavers work in small teams to decipher a doubly encoded (Morse code and code grids) message. Included file are for Beavers, use a more difficult message for older sections.
Morse code sheet
Encode a simple message in Morse code.
Spread the letters randomly between 5 numbered and identically coloured grids.
Colour code the letter spaces for each word on the answer sheet to match the squares containing the letters in the grids and use Morse code to indicate which grid each letter is in.
Place the code grids around the meeting place.
Distribute answer sheets (if you give each team a few words each then they can all work together at the end to arrange the words into the message)