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This experiential paper focuses on CodeLab, a tool for improving student learning in CS1. We introduce the basic features of CodeLab, both from the student and instructor side, discuss the use of CodeLab at two different types of institutions, and compare CodeLab to other interactive programming tutor products (CodingBat, Problets, zyBooks, and Python Tutor) that we have used in the last academic year.
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Barr et al. (2016) studied this question.
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