Students will use the Inverse of the given matrix to decode a secret message! I have included four messages to decode (one for each period that I teach). They would need to put the numbers into a 1 x 3 matrix and use the 3 x 3 matrix to decode the message. The messages are as follows:
FIRST PERIOD IS AWESOME
SECOND PERIOD ROCKS
THIRD PERIOD IS WONDERFUL
FANTASTIC FOURTH PERIOD
If you are interested in any that are not listed, send me a message and I can make them for you.