The document discusses the differences between -ed and -ing ending adjectives. -Ed adjectives describe how the subject feels, such as being "tired" or "bored". -Ing adjectives describe what is causing the feeling, such as something being "boring" or "tiring". Several examples are provided to demonstrate this difference. The document then provides a practice activity where students choose whether an -ed or -ing ending adjective is correct in different sentences describing feelings and situations.