Hello! A teacher friend wants to organize a STEM week for her 5th grade students and she asked me if I can prepare a few lessons on Physics. Ideally each one should be about one hour long. I have never taught a class before and wherever I explained physics it was in a formal, scientific way to my classmates/colleagues (I am doing a PhD). I would like to make these lectures as entertaining as possible for someone in the 5th grade (in the USA). Ideally I would like to do some basic science experiments, too. Do you have any suggestions or can you point me towards any online resources I can use/get some inspiration from? Anything advice be really appreciate it.