Science – The year, of course, is the time it takes for the Earth to orbit the Sun, right? Well, not exactly. It depends on what you mean by "year", and how you measure it. This takes a wee bit of explaining, so put down the champagne, take the lampshade off your head, and hang on.
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This article is rather long, but I thought it was very informative and written in a way that kept my attention and interest all the way to the end.
This would probably be a cool printout for 9th graders and older who are interested in science.