Do you know which letter of the English alphabet is used the most often? Hint: there were eight of them in that first sentence! How about the letter used the least? Hint: It is not letter Q. These secret code worksheets have fun facts about the letters of the alphabet. A shifted alphabet code is used to solve the hidden message. Each worksheet has an interesting fact about the alphabet. There are 10 worksheets in total. Answer keys are included. Topics include: How many letters are in the alpha