Common Sense Media – https://www.commonsense.org/education/top-picks/best-apps-and-websites-for-learning-programming-and-coding?utm_source=twitter&utm_medium=social&utm_term=%23HourofCode,TeachingStrategies,Top%2BPicks&utm_content=&utm_campaign=Common%2BSense%2BEducation
Appealing interface draws in boys and girls who can share creations with online community.
By meeting programming goals, kids unlock new levels and learn more advanced concepts.
Mozilla Thimble. 12+
Advanced, side-by-side coder lets kids see what programming codes do as they create.
Interactive lessons for several programming languages offer several skill-level tracks.
Membership service offers instruction and examples for more advanced coders.