Phase II Expansion Project: The Next Generation of Practice Exercises for Computer Science I

计算机科学（31）该项目扩展了Problets（www.problets.org）在计算机科学入门（CS 1）中的使用。Problets是一个智能辅导系统，提供模拟反馈，并根据学生的学习需求定制问题和反馈。该项目以三种方式扩展了Problets：1）开发：Problets是为CS 1中典型的C++/Java/C#中的高级命令式和面向对象主题创建的。此外，基础设施的开发，以提供暂停和恢复能力的学生，跨主题的定制，和设施的教师，以适应套件的Problets的具体方法，他们用来教CS 1。2)评估：新开发的Problets的有效性形成性评价，并通过使用Problets套件的学生在CS 1中的累积表现的效果进行总结性评价。3)传播：在区域和国家会议上举办讲习班，扩大Problet用户和研究人员的现有群体。智力优势：本项目：1）应用模拟反馈的有效性来帮助学生学习编程; 2）提出了下一代编程实践系统，其目标是最大限度地提高学习效果，同时最大限度地减少时间和精力; 3）开发了一个涵盖CS 1中通常包含的所有命令式和面向对象主题的实践系统;（4）研究常规问题解决练习对学生CS 1累积成绩的影响。在这个项目中开发的Problets套件有可能影响使用C++，Java和C#教学的学校在CS 1中的学习和教学。评价的结果影响教育实践的问题，如实践系统的最有效的功能和定期解决问题的做法对学习的影响。

Computer Science (31)The project expands the use of Problets (www.problets.org) in Introductory Computer Science (CS1). Problets is an intelligent tutoring system providing simulative feedback and customizing the problems and feedback to the learning needs of the student. This project expands Problets in three ways: 1) Development: Problets are created for the advanced imperative and object-oriented topics typically covered in CS1 in C++/Java/C#. Additionally, infrastructure is developed to provide suspend-and-resume capability to students, cross-topic customization, and facility for instructors to adapt the suite of Problets to the specific approach they use to teach CS1. 2) Evaluation: The effectiveness of the newly developed Problets is formatively evaluated, and summatively evaluated through the effect of using the suite of Problets on the cumulative performance of students in CS1. 3) Dissemination: Workshops at regional and national conferences are offered, expanding the current community of Problet users and researchers. Intellectual Merit: This project: 1) applies the proven effectiveness of simulative feedback to help students learn programming; 2) proposes the next generation of practice systems for programming, whose goal is to maximize learning while minimizing the time and effort; 3) develops a practice system that covers all the imperative and object-oriented topics typically included in CS1; and 4) studies the effect of regular problem-solving practice on the cumulative performance of students in CS1.Broader Impact: The suite of Problets developed in this project has the potential to affect learning and teaching in CS1 in the schools that teach with C++, Java and C#. The results of evaluation impact educational practices on issues such as the most effective features of practice systems and the effect of regular problem-solving practice on learning.