This is a very effective graphic for showing adult ESL students the most common uses of the prepositions "in", "on", and "at" for TIME and LOCATION. Included is a work sheet and answer key. Many other handouts, including this one, are contained in my book, "Let's Look At It This Way!", which is available in my store. It's actually a pretty good deal. For the cost of a few handouts, you get 50+ to reproduce for your instructional and classroom use..