fteem

DataMapper::setup(:default, "sqlite3://#{Dir.pwd}/blog.db")

class Post
  include DataMapper::Resource
  property :id, Serial
  property :title, String
  property :body, Text
  property :created_at, DateTime
  property :updated_at, DateTime
end

fteem

class Student 
  attr_accessor :first_term_home_work, :first_term_test, :first_term_paper attr_accessor,
                :second_term_home_work, :second_term_test, :second_term_paper

  def first_term_grade 
    (first_term_home_work + first_term_test + first_term_paper) / 3 
  end

  def second_term_grade 
    (second_term_home_work + second_term_test + second_term_paper) / 3