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

本项目扩展了problems （www.problets.org）在计算机科学导论（CS1）中的应用。问题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。这个项目以三种方式扩展了问题：1)开发：问题是为CS1中通常在c++ /Java/ c#中涵盖的高级命令式和面向对象主题创建的。此外，还开发了基础设施，为学生提供暂停和恢复功能、跨主题定制功能，并为教师提供设施，使其能够根据他们教授CS1时使用的特定方法调整问题套件。2)评价：对新开发问题的有效性进行形成性评价，并通过使用问题套件对CS1学生累积成绩的影响进行总结性评价。3)传播：在区域和国家会议上提供讲习班，扩大问题用户和研究人员的现有社区。智力优势：该项目：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率，同时减少时间和精力；3)开发一个实践系统，涵盖CS1中通常包含的所有命令式和面向对象主题；4)研究了定期问题解决练习对CS1学生累积成绩的影响。更广泛的影响：在这个项目中开发的问题套件有可能影响使用c++、Java和c#教学的学校的CS1学习和教学。评估结果影响教育实践的问题，如实践系统的最有效特征和定期解决问题的实践对学习的影响。

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.