Teaching Ruby classes

teaching.rb

class Human
  def initialize(name)
    @name = name
  end

  def read_book(book, page_number)
    page = book.open_page(page_number)
    read(page)
  end

  def read(object)
    puts "#{@name} reads: #{object}"
  end
end

class Book
  def initialize(text)
    @text = text
  end

  def open_page(page_number)
    @text[page_number]
  end
end

text = [
  "First page",
  "Second page",
  "Third page",
  "Forth page",
]
book = Book.new(text)

name = 'Nikita'
boy = Human.new(name)

boy.read_book(book, 2)