The 4C/ID model aims to help instructional designers develop educational programs for teaching complex skills or professional competencies. It describes educational programs as being built from four components: (1) learning tasks, (2) supportive information, (3) procedural information, and (4) part-task practice.
It nicely fits current trends in education: a focus on the development of complex skills or professional competencies, increasing transfer of what is learned in school to new situations, including the workplace, and the development of skills that are important for lifelong learning.