I made this Secret Decoder Activity for my students to do at the Word Study Center. I will print the key page (page 1) on cardstock, laminate, and post by center. I'll print the pieces (page 2) on a magnet sheet, cut apart, and place in container at the center with a couple of magnetic boards. On Wednesdays and Thursdays, students will complete several activities to practice their high-frequency words of the week. This will be one of the choices. They will use the magnets to code each of their words and their partner will decode the words using the key. Enjoy!