Box Island - Award Winning Coding Adventure

The free version of Box Island - Award Winning Coding Adventure includes a limited number of puzzles before users run into a big paywall. But if students choose to use the Hour of Code activity, they'll get 20 levels that gradually introduce basic concepts such as algorithms, sequences, loops, and conditionals. As the name suggests, the idea is that students play for one hour and come away with a basic foundation, though teachers could clearly have students visit the levels in several smaller chunks of time. If students are just starting out, they can play in pairs or small groups. This version, which has levels kids can access for free, allows for only one profile. Box Island for Schools accommodates four profiles, but there's no content for free. There's a lesson plan, a curriculum guide, and an answer key on the developer's website, all of which could be helpful resources for teachers looking to build a coding learning unit.