Teacher Aldo stands in the lab.

Teacher Aldo is in his thirties, with short curly black hair and a shadow of a goatee. He wears glasses and a blue Homework Zone T-shirt.

He says HI, I'M TEACHER
ALDO AND I'M HERE TODAY TO TALK
TO YOU ABOUT AMBIENT SOUND.
HAVE YOU EVER WALKED ALONG THE
BEACH AND PICKED UP A SEA SHELL
AND HELD IT CLOSE TO YOUR EAR?
WHAT DO YOU HEAR?
IT'S NOT THE OCEAN BUT THAT'S
AMBIENT SOUND RESONATING INSIDE
THE SEA SHELL.
THE GREAT THING
IS THAT YOU DON'T NEED THE SEA
SHELL TO REPLICATE THIS, ALL
YOU HAVE TO DO IS PICK UP YOUR
HAND, CUP IT TO YOUR EAR AND
YOU CAN HEAR AMBIENT SOUND.
I'M TEACHER ALDO AND NOW YOU
KNOW.