A set of slides depicts sick children, an artistic rendition of a white blood cell amongst red blood cells, and a diagram of part of the lymph system to teach youngsters about immunity. Kids will find that it is made up of skin, white blood cells, and lymph nodes. One way to use it would be as a visual aid to your instructional activity on the immune system. Another way would be to give learners the website so that they can explore it at home as part of a flipped classroom.