Boolify: PubLearn's Boolean Search Tool
Visual tool for creating Boolean searches--shows search criteria as puzzle pieces. Also includes a few lesson plans
Flickr: "pc40sf06"
Student projects showing trigonometry concepts through annotated Flickr images. The pink sweater is my favorite.
Visual literacy K-8
Free resources for teachers with information on visual literacy, focusing on visual sources of information like maps, diagrams, timelines, and storyboards