Here are some resources for you in planning to implement Micro:Bit in your classroom-
Overview of the program and why: Overview Link
Classroom Resources and planning downloads: Free Resources
21 Lesson Plans: Lesson Plan Link
Lessons on MakeCode to implement: MakeCode Lessons
Science Experiments: Science Experiments on MakeCode
Professional Development: Courses Link
More Lesson Plans
Here is your resource hub for Micro:Bit! Resource Dashboard Link
On this page, you'll see a dashboard that is already open. This will be device by device specific. Mine has my previous projects, all of a student's projects will be on their computer.
Here, students can click New Project to create their own using one or all three coding types. If they scroll down, they can see project ideas (START HERE) where it will walk them through multiple project types. These include: Games, Radio Games, Live Coding, Tutorials, Fashion, Music, Toys, Science, Tools, Science Experiments, Coding for Teachers, and so many other things.
The tutorials are very easy to follow and are a lot of fun. These are great for individual exploration for grades 3-5 and guided help for K-2.