LA ESCALA: FP1

https://www.google.com/search?q=Escalas:+conceptos+de+escala,+tipo+y+ejercicios&sxsrf=ACYBGNT_eL6f4UJT0fR5-c64xPmRrAvOug:1569530482622&source=lnms&tbm=vid&sa=X&ved=0ahUKEwiPx4XXrO_kAhWNx4UKHXi7BckQ_AUIEygC&biw=1366&bih=635