Having the prepositions of time listed and in sections is nice. But I would also have more graphic examples. I would make a worksheet where the students matched examples to the appropriate preposition of time.
Tying a rope is one of the most practical skills to have in your arsenal, and 99 percent of the time, a bowline is the best knot for the job. Not only does it offer a rock solid hold, it can be tied and untied in seconds, even after bearing tension.