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Developing a Scratch-based coding achievement test

机译：开发基于Scratch的编码成就测试

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摘要

Purpose - The lack of a reliable and valid measurement tool for coding achievement emerges as a major problem in Turkey. Therefore, the purpose of this study is to develop a Scratch-based coding achievement test. Design/methodology/approach - Initially, an item pool with 31 items was created. The item pool was classified within the framework of Bayman and Mayer's (1988) types of coding knowledge to support content validity of the test. Then the item pool was applied to 186 volunteer undergraduates at Hacettepe University during the spring semester of the 2017-2018 academic year. Subsequently, the item analysis was conducted for construct validity of the test Findings - In all, 13 items were discarded from the test, leaving a total of 18 items. Out of the 18-item version of the coding achievement test, 4, 5 and 9 items measured syntactic, conceptual and strategic knowledge, respectively, among the types of coding knowledge. Furthermore, average item discrimination index (0.531), average item difficulty index (0.541) and Cronbach Alpha reliability coefficient (0.801) of the test were calculated. Practical implications - Scratch users, especially those who are taking introductory courses at Turkish universities, could benefit from a reliable and valid coding achievement test developed in this study. Originality/value - This paper has theoretical and practical value, as it provides detailed developmental stages of a reliable and valid Scratch-based coding achievement test.
机译：目的-在土耳其，缺乏可靠而有效的编码成果度量工具已成为一个主要问题。因此，本研究的目的是开发基于Scratch的编码成就测试。设计/方法/方法-最初，创建了一个包含31个项目的项目库。该项目库在Bayman和Mayer（1988）的编码知识类型框架内进行分类，以支持测试的内容有效性。然后在2017-2018学年春季学期将项目池应用于Hacettepe大学的186名志愿大学生。随后，对项目进行了结构分析以验证测试的有效性。结果-总共从测试中丢弃了13个项目，总共剩下18个项目。在编码成就测试的18个项目版本中，有4、5和9个项目分别测量了语法知识，概念知识和策略知识，其中包括编码知识的类型。此外，计算了测试的平均项目判别指数（0.531），平均项目难度指数（0.541）和Cronbach Alpha可靠性系数（0.801）。实际意义-从头开始使用的用户，尤其是在土耳其大学学习入门课程的用户，可以受益于本研究开发的可靠而有效的编码成绩测试。创意/价值-本文具有理论和实践价值，因为它提供了可靠且有效的基于Scratch的编码成果测试的详细开发阶段。

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