Triple Tri

My instrument is three in one. The three instruments are a whistle,

which is part of the wind family, a guitar, which is part of the string family,

and a sand block, which is part of the percussion family.

They work because of Science. The whistle works because of sound waves, the

guitar works because of vibration, and the sand block works because of friction.

I call my instrument "Triple Tri" because both these words mean three.

Monica, Trinity Seventh Grade