Scratch 作品展示非常丰富,孩子们可以到Scratch官方寻找创意灵感。Scratch is a free programming language and online community where you can create your own interactive stories, games, and animations.
哈佛公开课 哈佛大学公开课,远程学习平台。Study part time at Harvard, in evening or online courses. Earn a degree, professional certificate, or take a course for enrichment.