Microbit and b.Boards are easy and powerful MakeCode block-based coding tools. It uses a project-based curriculum with a maker philosophy at its core; the idea is that by making physical objects, students create a context to learn computer science concepts, to think creatively, to code, and to become innovative.

You can code at: https://code.brilliantlabs.ca/ 

Tutorial for codes: https://makecode.microbit.org/tutorials 

Source: https://makecode.microbit.org/courses/csintro