7W case-lessons are the main innovation in the world in 2018-2019. A lot of teachers, parents and students use them at school, or as homeschooling, or online.Case-lesson for study " Halooween"Scans: History/Culture/Physics/Chemistry/Botany/Cooking/Design/AstronomyWhen the darkness covers the earth with its inexorable blanket...When the night licks the colors of the world, leaving only gray, black, purple and dimly-green tones...When the wind howls with a lot of anguish and the trees screech as i