Alright! I am happy to hear it went well! My students just turned in theirs today... I have to look at them still.
On the note of "write it for Kindergardeners", someone I know who teaches science has his students explain a scientific concept using the "Ten Hundred Most Common Words". It was this thing started by the XKCD folks. Here is my handout for it. Some Nasa scientists even got into it - here is a video about "how to go to space"
I had students write a paragraph describing either their research topic or how the internet worked. Some students did better than others. I didn't do a good enough job selling it to students. My science-teacher-friend's kids eat it up - it is the highlight of the project for them. My students shrugged it off. I also don't know how much time I should invest into getting them into it.
Here was one students explanations around how to get internet to remote locations:
"To get on line to far places, you need a few things. An on line person willing to send the learning needed, a way to get the learning to the place, money to make the learning go, and people willing to pay for the learning. The best way right now to get on line to far places is by the use of sky ball. If a big town or city is using sky ball on line, they will need a ground sky ball and lines usually under ground to get the on line to people that need it. If it is just one person that needs the on line, then it will be a lot of money because they will need their own ground sky ball in order to get the on line, and they will also have to pay the person that they use for the on line. This is why people in less money places do not have on line usually because they barely have money and it is too much for them to buy it. sky ball on line can be not good sometimes when it has slow time and high send time which is how long it takes from the time it is sent to get. In the follow years there will be better ways to get less money and better on line in far away places that need it and it will make the world more people to people through talk. "
I thought it was entertaining. From and academic perspective, it forced students to think about how they explain something really technical. Some of my students like using really big words without knowing what they mean - this forced them to slow it down, and be more intentional about their word choice.