1. Combine water, vinegar, sugar, and cinnamon sticks in 3-quart casserole. Cook, covered, on Full Power for 11 to 14 minutes, or until mixture boils and sugar is dissolved. Stir halfway through cooking time.
2. Add pears. Heat, covered, on Full Power for 2 1/2 to 4 1/2 minutes, or until warmed. Pack into jars. Add one stick cinnamon to each jar. Pour syrup over pears. Refrigerate for 1 week before using.