NobleMinds Montessori - DID YOU KNOW THAT? This Montessori material (Sound box) helps a child refine his or her auditory senses in a controlled and engaging way. The material 'isolates one difficulty'
Montessori In A Minute: Sound Cylinders
Sound Boxes - K Mode Marketing
The Children's Tree Montessori School Inc - Sound boxes contain cylinders that, when shaken, make sounds varying from very soft to very loud. Each red cylinder has a corresponding blue cylinder. The