How Does the Human Body Work?

Though there are some nice diagrams and animations of the human body's systems, the overall organization of this app doesn't have enough scaffolding to allow for meaningful learning. There are plenty of positives in terms of the art, animations, and quality of information. And free play and exploration are wonderful ways to let kids take the lead in their own learning; there are other, similar apps that take this approach successfully. But How Does the Human Body Work? can be a bit confusing, in regards both to app navigation and to how the information is presented, perhaps because it's trying to do too much. With no help or explanation about the many different icons and buttons -- some of which do things, some of which don't -- it can be tricky to know what to do next. Also, the text-heavy overview of what each system does is sometimes written in language that isn't always kid-friendly. Some demonstrations, like the heart beating faster as the body runs, are straightforward enough to stand on their own. However, many others aren't. It would be nice to see some level of support or explanation so that kids can understand what they're watching when, for example, the signal from a mosquito bite travels through the nervous system. How Does the Human Body Work? works best as a tool for kids to use together with a grown-up who can provide all the missing context and explanation.