Piezas necesarias:

Solenoid

• 2 Models

• Straw

• 1 Battery, C

• 1 Nail, large

• Paperclips or small nails to pick up

• Aluminum foil

Speaker​

• 2 Models

• 1 Cup with raised bottom

• 2 Paper fasteners

• 1 Rubber band, medium

• 2 Magnets, rectangle

• 40' Magnet wire, #30 or a bit larger

• 2 Palito de paleta

• 1 Plug, mono

• 3" PVC tube, 1/2", to make wire coil

String Telephone​

• 2 Models

• Toothpick

• 20' String, kite string works well

• 1 Plastic cup

• Nail, to make hole in cup

Herramientas adicionales:

• Philips screwdriver (to make holes for paper fastener)

• Sand paper, small bits

• Radio

• Amplifier

• Black tape

• Decoration: pipe cleaners