The document discusses teaching prepositions to language learners. It provides several suggestions: 1) Introduce prepositions that occur with new verbs and adjectives. 2) Use matrices to help students learn the spatial meanings of prepositions. 3) Play games like "A Bear Hunt" that associate prepositions with actions. 4) Teach the prototypical and metaphorical meanings of individual prepositions like "on" systematically using examples.