Work in progress - effective student ink submissions in computer science courses

Topics in introductory computer science courses involve diagrams. Every data structure (e.g., stack, list, tree, or graph) is best understood when the definition is accompanied by a diagram. Demonstrating control flow within a method, or parameter passing from one method to another, are more easily explained using circles, boxes, and arrows. This paper describes our experiences with a Web-based tool called MessageGrid which facilitates interaction between instructor and students in the classroom. Focus is on the most recent MessageGrid feature: student submission using digital Ink. We provide examples of exercises we use and student responses. We summarize the results of a student survey evaluating this new technology. Finally, we draw conclusions and describe plans for the future.