This is a ... (beware: not a head)
This is a face.
This is a ...
This is a nose.
This is an ...
This is an arm.
These are ...
These are teeth.
This is a...
This is a knee.
This is an ...
This is an ear.
This is a ...
This is a hand.
This is a ...
This is a neck.
These are ...
These are toes. / These are ten toes.
These are 5 ...
These are five fingers
This is a...
This is a shoulder.
This is an ...
This is an elbow.
This is a...
This is a mouth.
This is ...
This is hair.
This is a...
This is a foot. / These are feet.
This is an ...
This is an eye.
This is a ...
This is a head.
This is a...
This is a back.