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Developing a Scratch-based coding achievement test

机译：开发基于划痕的编码成就测试

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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 - 缺乏用于编码成就的可靠和有效的测量工具作为土耳其的一个主要问题。因此，本研究的目的是开发基于划痕的编码成就测试。设计/方法/方法 - 最初，创建了具有31项的项目池。该项目池在Bayman和Mayer（1988年）的编码知识框架内分类，以支持测试内容有效性。然后，项目池适用于2017 - 2018年春季学期在Hacettepe大学的186名志愿者大学内。随后，对测试结果构建有效性进行了物品分析 - 总而言之，从测试中丢弃了13项，总共18项。在编码的18项版本中，4,5和9项分别在编码知识的类型中测量了句法，概念和战略知识。此外，计算了平均物品歧视指数（0.531），计算试验的平均物品难度指数（0.541）和Cronbachα可靠性系数（0.801）。实际意义 - 划痕用户，特别是那些正在临到土耳其大学课程的人，可以从本研究中开发的可靠和有效的编码成就测试中受益。原创性/值 - 本文具有理论和实用的价值，因为它提供了可靠和有效的基于划痕的编码成就测试的详细发展阶段。

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