Compared Theory ThingsWilliam Wieland

Binary
Corelli Sarabanda (Largo)
from Violin Sonata op.5 no. 7

Ternary
Schumann "Humming Song"
from Album for the Young op. 68 no. 3

Rounded Binary
Mozart Tema (Andante)
from Piano Sonata in D major K. 284
Musical Form explained — an excellent video about binary and ternary form