Why Logical thinking?

Not all the students know about the basic subjects. Logical thinking is required for developing an altitude of thinking (why and how?). Generally,

• · A kid doesn’t know that why a subject is taught to him.
  · What is the usage of English literature ?( English grammar, they might be knowing)
  · Why do we study Mathematics ( apart from basic calculations, interest and profit loss questions)
  · Why do we study geometry?
  · Why do we study differentiation?
  · Why are we taught history?
  · Why do we study hindi/sanskrit?
  · They don’t know even how basic things work, how internet works? How a scooter/cycle work?