Scratch1.4
Because of having OS(Raspbian) and GPIO pins, RaspberryPi is easy to deal with.Especially, it is very nice to have no trouble to burn programs.
Scratch is realy easy to programing.However, it may be somewhat too simple. It is doubtful whether it can handle complicated processes.
micro:bit is small but powerful development board, which doesn't need a coding software. We can progrram through a browser. I am a novice with programming, so switching blocks editor and JavaScript back and forth will help me understanding how javascript program works.
I want a block editor for a python programming.