without even mentioning concepts of programming languages, or Python...
Why not at least mention to students how things work?
Home | Codesters
Free demo:
Building your First Program - Intro to Codesters | Codesters Curriculum

"
def click():
sprite.say("Hey there Codester!")
sprite.move_up(100)
sprite.turn_right(360)
sprite.move_down(100)
sprite.say("Great job.")
sprite.wait(2)
sprite.say("Click submit and next to continue!")
sprite.event_click(click)
"