Because steps are observable, they are partly determined by the user interface available to the student for solving the problem. A step is an observable part of the solution to a problem.Each hint request, incorrect attempt, or correct attempt is a transaction and a step can involve one or more transactions. Students may make incorrect entries or ask for hints before getting a step correct.A transaction is an interaction between the student and the tutoring system.Important Terms Transaction Step Sample KC (Knowledge Component) Opportunity Observation LFA AIC BIC see You have to be a project member or PI for the dataset to appear here. For access to other datasets, contact – Dataset selection Private datasets you can’t view.Joint Explanation - Electric Fields - Pitt - Spring 2007.Of these, we recommend three for getting started:.By default, you will have access to the public datasets.If you’re a CMU student/staff/faculty, click “Log in with WebISO” to create your account.Complete the form to create your DataShop account. On DataShop's home page, click 'Sign up now'.Explore data through the DataShop tools.These data require a conversion process.Other tutors are logging to their own file formats or their own databases.CTAT-based tutors (when configured correctly).Some tutors are logging directly to the PSLC logging database.…can export the data to a tab-delimited format.…provides visualization and reports for researchers to analyze their data.…imports data into a relational database.…converts log data to a uniform XML Format.Older data can be transformed to the tutor logging format.Data is captured in files or sent to the logging database.New tools created to meet highest demandsġ Collect Store Report 2 3 How do I get data in?.Tab delimited tables you can open with your favorite spreadsheet program or statistical package.Performance Profiler aggregates across various levels of granularity (problem, dataset levels, knowledge components, etc.).Learning curves & error reports provide summary and low-level views of student performance.Focus on student-tutor interaction data.Secure place to store & access research data.

PSLC DataShop Introduction Slides current to DataShop version 4.1.8

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