What did friedrich froebel think was the highest expression of human devolopment

Examine the two environment sculptures photographed above. for each, name its title or its description, and the type of environment sculpture it is. how does each relate to its individual environment.

What materials were commonly used to make each type of art during this period

Which type of notes dip or blend by a quarter or half step and swoop up to higher pitches to make jazz sound more like a human voice