Your students will love decoding these earth day messages! Each Google slides presents a different code including binary, morse, Atbash cipher, pig pen and a number code. Each will reveal a special earth day reminder! Includes a Google form so students can self check. This product can be used digitally or as a printable!Decoding messages is a valuable skill for students as it can provide them with various benefits. it can improve their critical thinking skills by requiring them to analyze and