Explain that bones grow and are alive. Explain the need for calcium to build strong healthy bones. Ninety percent of the bodies calcium is in the bones. Calcium is especially important when you are young, it helps your bones to grow bigger, stronger, and healthier. Reiterate that bones help to support your body, they help you to move your body, and they protect your body.
Bones are hard on the outside but spongy on the inside.
They use nutrients and energy, and can detect sensations. Have them draw a picture of the bone and then hypothesize as to which bone it is similar to in the human skeleton. Ask the students to look at how the joints move. This will introduce them to the concept of joints. The students should write the name of the bone on the paper plate bone.