Code.org is a fabulous web tool with an abundance of coding and computer science resources. There are various courses in the Code Studio such as The Hour of Code, Elementary Courses, Intro Courses, and Flappy code. You can organize your class and get instant feedback on how the kids are doing. If you don’t feel like setting up a class, no need. You can still do the courses without an account. Easy for teachers to learn, too. Do one of the courses yourself!