This learning crisis is the best world problem to getting ready kids and adolescents for all times, work and energetic citizenship. A lack of trained lecturers, inadequate studying materials, makeshift lessons and poor sanitation facilities make learning difficult for so much of children. Others come to high school too hungry, sick or exhausted from work or household duties to profit from their lessons. Primitive kids, before reaching puberty, learn by doing and observing fundamental technical practices.
In practice there is a continuum from the extremely formalized to the highly informalized, and informal learning can happen in all three settings. For …