Lesson 8: Crack the Code: Cryptograms Copy

Lesson 8: Crack the Code!

It may not be quite as challenging as the DaVinci Code, but the coded message left on Mr. Mugg’s desk just might point to a clever thief. Learners uncover many secrets of the alphabet (and of master criminals!) in this deciphering activity.

Students who are “quick” may easily finish ahead of others; encourage these students to develop their own codes and practice by writing their names or short messages to share with their partners.

Lesson Objectives

  • Encode own cryptogram
  • Decode student cryptogram examples using different techniques
  • Examine techniques used in decoding cryptograms and apply them to decode the message found at the crime scene

Next, simply click the links below for further instructions and steps on how to get started!


  • 6 index cards
  • black marker
  • masking tape
  • photos of coded note

Students (Groups of Three)

  • 3 pencils
  • Student Book pages (on Resource CD)