You Decide
Demonstration
<5 minutes
drop in' visitors
paper
Learners are given both people and technology cards. Each technology card is marked with a symbol to indicate whether the featured radio technology represents near future possibility, far future possibility, or an idea way beyond current science. Cards are intended to inspire curiosity about the science of radio, increase thoughtfulness around the role of radio in our everyday lives, and spur imagination.
myTalkies
Video
30+ minutes
individual
special tech
Coding a BBC micro:bit, students craft a paper myTalkie from precut templates and a paper potentiometer to program custom messages that are sent by the micro:bit’s Bluetooth radio. Together, students design a tabletop model of a system of radio communications to meet a community problem.
Wi-Fi Detective
App
15-30 minutes
drop in' visitors
mobile phone
This exploration activity uses Wi-Fi Detector app to measure the Wi-Fi signal strength emitted from a router transmitting radio waves. Learners use different materials to explore wave interference placed in between the Wi-Fi router and the smartphone running the Wi-Fi Detector app.
Radio Silence
Demonstration
5-15 minutes
drop in' visitors
multiple parts
How does the radio signal sent from a station’s transmitter miles away get to your device? Which materials work best at blocking the radio waves? Learners explore interference and how radio waves can be blocked using different containers and wrapping materials.
Wireless Sensors
Activity
30-45 minutes
small groups
computer, battery packs, micro:bits
Explore how micro:bit sensors, such as light, temperature, sound, and touch, collect environmental data. Use the micro:bit’s radio feature to wirelessly transmit this data to another device, demonstrating how radio technology enhances real-world sensor applications.
Deconstruct a communication system
Activity
15-30 minutes
camp
paper
Learners unpack how a message is transmitted from one person to another, then build a model of a communication system for sound and for radio using cardboard cutouts to represent components like transmitter, receiver, radio wave, message, vocal cords, speaker and listener.