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Connect-a-Sketch (based on the classic Etch-a-Sketch toy) is a free service intended to help people take their existing sketches and images and arrange them into an online flowchart. Creating a flowchart is just a matter of uploading JNP and or PNG images, then arranging them into a sequence you want. You can then add connecting lines between your images. If you have a new element to add, go back and edit the sketch. One-click sharing.
It was built for developing prototypes for industrial applications, but the service offers may education uses. Students could use Connect-a-Sketch to arrange images from news stories into a sequence, diagram a story they're writing, or show the steps for solving a problem. Instructors can use it to explain a process, provide illustrations, and make flowcharts.