The non-living things around us, explored in Physical Science.

I would tend to believe that Physical Science is probably the most exciting to children based on the fact that it provides a foundation for how everything works. The Laws of Gravity, motion, sound, chemical reactions, and electricity to name a few. 

The Physical Sciences leave so much room for experimentation and learning through a hands-on approach if given the opportunity. Just because children may not understand Einsteins' Theory of Relativity and an elementary school age, they can still understand the concepts of gravity without attaching a name to it. As teachers, we can provide instruction to students with basic foundations of physics, biology, chemistry, and so forth which they can further develop as they grow older. And although they may not recall the scientific names, I believe they can grasp the material and the content.

Children's minds work much like scientists because of their natural curiosity for the world around them. If we treat them like scientists, we provide them with a template in which they can expand further. We can provide definitions for concepts they already know for them to be able to relate. For example, a book falls from a desk, children may not know what gravity is, but this is an opportunity to provide an example.

By allowing children to have fun, experiment, and learn through guided practice, we are enabling them to grow not only as students but by learning concepts and methods they can use throughout life in all situations.