Third graders solve a cryptogram by decoding a message written with wingdings.  In this decoding lesson, 3rd graders solve a message related to magnetism.  Students have notes about magnets once they've finished.

Students participate in an activity that introduces them to the concept of binary coding as a language. They decode messages using special boards that has its own code for different letters. They create new codes by rearranging wires...

Students visualize a communication system. They encode, decode, transmit, receive and store messages. Students use a code sheet and flashlight for this process. They will also maintain a storage sheet from which they can retrieve...

Students role-play as soldiers rescuing lost mountain climbers. Working in teams, they interpret maps to locate the climbers and use flashlights to send and receive coded messages about the rescue. Their goal is to complete the task in...

The I-STOP law was designed to regulate the distribution and tracking of prescription drugs. After reading an article about its signing and implementation, middle and high schoolers work together to come up with their own ideas for an...

Students examine digital images and how satellites orbiting Earth send information and pictures to Earth over the Internet. They use a digital camera to put pictures on a computer and decode a satellite image from space.

This lesson provides real life applications for divisibility and prime numbers including the Cicada Cycle's use of prime numbers and Cryptography,encryption.