Use Skitch to sketch something new, mark up maps, screen captures, or even a photo. Then save or share your Skitch annotation to help others see and understand your ideas:
Geography: Share a diagram of the earth’s layers and have students label it with you.
History: Share a picture of a historic site and have students label what happened, where and when.
Peer assessment: Instead of using annotations in Word, Skitch could be used to provide feedback.