For this activity, a life-size skeleton is needed. You will have to prepare flashcards with the name of each major bone on our skeletal system. On the front side, they will bear the name of each bone and on the reverse side something to clip on or temporarily stick on the plastic skeleton. After you have introduced pupils to the basic parts of the human body, you will ask them to place each flashcard on the corresponding bone.
Ask pupils to create a simple skeleton, gluing drinking straws on a black piece of paper. They can use white paint or chalk for the skull. You will then assign different tasks to each student, like naming a different bone or indicating which bones are essential for running or protecting the lungs. Individual tasks will help you avoid cheating among pupils and ensure that every one of them is focused on the lesson.
There are numerous everyday activities that unfortunately can lead to injuries, but you may use them to both teach about the skeletal system and raise pupils' awareness. For example, make up a story about a soccer match, where a defender does a reckless tackle. Help children identify the hazards for the human skeletal system and which bones are likely to be damaged in similar or more serious occasions, like labor accidents. A life-size skeleton or a human skeleton drawing on the board will be a great help for this activity.
One of the most important attributes of our bones is their ability to heal themselves. Try to find an x-ray of a broken bone (you can download it from the Internet) and discuss with the students the healing process. Explain why doctors use plaster to line up the broken bone and draw certain stages of the bone, from the moment it's broken until it is fully healed. Injuries involving bone fractures are common among children, since their skeletal system is still fragile and they take part in many physical activities, so you can ask pupils with such experience to lead the conversation.