This prepositions of Time fan can help support students by providing examples of when to use at, in and on appropriately. Using Prepositions of Time correctly can be particularly tricky for ESL students and these fans help to support students when working independently to select the right choices. I use these fans with my ESL students. Initially they relied on them quite heavily, but now that they have used the fans many times, they are becoming more familiar with the rules for these prepositions. I hope they work well for your students.
I have put four fans onto one A3 page to make it easier for printing.