Can your students help save Grandmother from the hungry wolf? They can and they will, by coding a message. This is the perfect STEM activity when you are learning about sound and waves. Using the information provided and simple materials, students will construct a way to create an auditory message and send out a distress signal. The StoryGrandma is ill and Little Red Riding Hood is on her way through the woods for a visit. She meets the wolf and he decides he will eat well today. Not so fast!