Title:El número como cantidad física y concreta, un obstáculo en el aprendizaje de los números enteros = The number as a physical and concrete quantity, an obstacle in the learning of whole numbers. / The number as a physical and concrete quantity, an obstacle in the learning of whole numbers
Title:Opinión de los pacientes tras un programa de ejercicio físico domiciliario = Patient opinion after a home physical exercise program / Patient opinion after a home physical exercise program