ScratchJr是一款专为iPad设计的编程应用，兼容iOS系统，适合儿童和青少年使用。操作直观简便，充满趣味性，广受孩子们欢迎。接下来将介绍如何在iPad上安装并使用ScratchJr进行创意编程。 1、 在iPad的应用商店搜索并下载安装ScratchJr软件。 2、 打开ScratchJr，进入主 ...

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Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

+ + We are very excited about the use of Scratch Jr in the classroom, especially for children in early school years. + + When we discovered the schools in our area did not have access to tablets, we ...