A joint is like a special meeting place where two parts of your body come together, just like when two puzzle pieces fit perfectly. These places let you move and bend, like when you wave your hand or kick a ball. Think of a joint as a hinge on a door that lets it open and close smoothly.
Imagine a robot made of blocks. The blocks are the bones, and the places where they connect are the joints. Without these joints, the robot would be stiff and couldn’t dance or jump around. Joints help us do all our fun activities by letting our bones move.
Think of a train with many cars linked together. The parts that connect the cars are like joints. They allow the train to move around curves and go up and down hills without breaking apart. In the same way, joints help our body move in many directions without falling apart.