Search Results
Showing results 1 to 6 of 6
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-663.jpg?itok=heJAdwhR)
Cup Speaker
Source Institutions
Make your own speaker with a magnet, wire, and paper cup! If you have a radio with a headphone plug and an old pair of headphones, this is a great tinkering activity.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-127.png?itok=MvN33yno)
Make a Speaker: A Coil, a Magnet, and Thou
Source Institutions
Make your own simple speaker so you can listen to your favorite radio station. Just wind a coil, attach it to a piece of cardboard or Styrofoam, hold a magnet nearby, and listen.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-814.jpg?itok=dbAFCZt-)
Tune Booster
Source Institutions
In this activity, learners build unique sound enhancing inventions with items from around the house to amplify sound from their smart phone's speakers.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-982.png?itok=lMEF_4Cv)
Electric Cup Guitar
Source Institutions
Make a one-string "guitar" by stringing a cup with some fishing line. You amplify the plucking of the string by placing a piezo contact microphone and mini battery powered amplifier inside the cup.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-396.jpg?itok=PAEvvCRO)
Make a Speaker
Source Institutions
In this activity, learners explore how an electromagnet works by making a simple one. Using this knowledge, learners design a diagram to make a working speaker using household materials.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-684.jpg?itok=LXQMmNU0)
Modulated Coil: Hear the magnet!
Source Institutions
Do you have an extra portable cassette tape player hanging around?