Children are always learning, even when they are playing games. Introduce your lesson on the human body with a quick game of the Hokey Pokey. Have the children stand in a circle and sing the Hokey Pokey song as you encourage the children to follow along with the lyrics by putting their various body parts in the circle as the song calls for it. You don't have to stick with the traditional lyrics of just the right and left hand, and right and left foot; include the stomach, the rear, the head, and so on.
Have students search through age appropriate magazines and use safety scissors to cut out parts of the head: eyes, noses, mouths, foreheads, eyebrows, cheeks, chins, and even hair and ears. Allow them to pick from their pile of facial features, or gather up all of the students pieces, mix them up in a big pile, and allow the students to come to the center of the room to choose from that pile. Then hand out blank ovals for faces, and ask students to glue the facial features into the appropriate places.
Clear a wide space on the floor, and lay out multiple copies of papers that are shaped like various body parts. These can include feet, hands, ears, noses, heads, legs, arms, and so on. Have the children stand in a circle around the shapes, then begin playing music, and instruct the children to walk around and into the area where the shapes are laid out. Instruct the children to freeze when you stop playing the music, and look down at the closest shape to them. The children should each show you that they can identify the body part they are standing near by pointing to it on their own body, and allowing them to shout it out to you.
Give each child a piece of butcher paper the length of their body, and pair them up with another student. Have the students trace their buddies on the butcher paper. Once each student has had his body traced, lead the students in decorating the body. Call out each body part, and allow them a certain amount of time to decorate that part. If the students are able, have them practice their writing by spelling out the body parts, and having them write them down in the right location.