Se necesita mucha practica para que domines esta destreza.
Remember that "Practice makes Masters", continue with the next ejercice and click on the "School Classrrom"
These pages were developed through GirlTECH , a teacher training and student technology council program sponsored by the Center for Research on Parallel Computation (CRPC), a National Science Foundation Science and Technology Center. Copyright December 1997 work sheet created by Jaime F. Narvaez. July 1998