“The First Step” by Kristine Kathryn Rusch is an Asimov’s Science Fiction magazine Readers’ Awards Finalist in the short story category. It was originally published in Asimov’s August 2015 issue. Currently, this story and most of the other finalists are available to read for free on the Readers’ Awards Finalists page at Asimov’s.
I am a sucker for time travel stories and this tale of a scientist using his own invention to go back in time to see his son’s first steps was delightful and simple (and I like simple). Nicely told, nothing complicated or difficult to understand. This is the sort of fiction that I would be proud to have written.