See-Through Slide Whistle

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This transparent slide whistle is designed to show children how sound works. The transparent tube allows a child to visualize the chamber size changing as the sound changes! For example, a large chamber of air produces a low note, a small chamber produces a high note. Excellent quality, with a wide range of lively sound effects.


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  • : 082562330009
  • : Trophy Music Company
  • : Trophy Music Company
  • : books