Socks In Pairs
Red sock. Red sock.
That is two red socks. A pair.
Blue sock. Blue sock.
That is two blue socks. A pair.
Yellow sock. Yellow sock. Another pair.
Green sock. Green sock. Another pair.
But — wait. One stripy sock. Where is the other stripy sock?
Under the chair?
Yes! Under the chair. Now they are a pair.
Five pairs of socks. Hooray.