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Turn out the lights for this mesmerizing, interactive show. A plain white string is connected to tw...
This extra-long version of the familiar and always popular spring toy provides an excellent demonstr...
2cm diameter, 180cm long (collapsed) helical spring. "Snaky" is ideal for demonstrating fu...
Foam ball has a battery-powered buzzer inside. Start the buzzer and play catch. Throw it fast enou...
Class room set of 30 tapes that reproduce sound when rubbed with your fingernail.
Twirling the pipe at different speeds produces up to five different resonant tones. It''s ...
Includes 8 Tuning Forks, rubber hammer, and a soft protective case for easy storage.
Set includes two C Note 256 Hz tuning forks, one fixed and one adjustable, each mounted on a wooden ...
How could something as simple as two megaphone/ear trumpets connected by a helical coil spring produ...
Demonstrate open- and closed-piped resonance with these colorful tubes. When whacked against the flo...
The Big Thunder Drum produces a rumbling sound like thunder by amplifying spring vibrations.